fix tui error

[vipyne]

issue: missing textual dependency in pyproject.toml
also this error when running stegg-tui:

warning: The package `typer==0.25.1` does not have an extra named `all`
warning: The package `typer==0.23.2` does not have an extra named `all`
      Built stegg @ file://~/ST3GG
Uninstalled 1 package in 0.87ms
Installed 1 package in 1ms
╭───────────────────────────────────────────────── Traceback (most recent call last) ──────────────────────────────────────────────────╮
│ ~/ST3GG/tui.py:321 in compose                                                                   │
│                                                                                                                                      │
│   318 │   │   │   ),                                                                                                                 │
│   319 │   │   │   Vertical(                                                                                                          │
│   320 │   │   │   │   TabbedContent(                                                                                                 │
│ ❱ 321 │   │   │   │   │   TabPane("Home", self._home_content(), id="tab-home"),                                                      │
│   322 │   │   │   │   │   TabPane("Encode", self._encode_content(), id="tab-encode"),                                                │
│   323 │   │   │   │   │   TabPane("Decode", self._decode_content(), id="tab-decode"),                                                │
│   324 │   │   │   │   │   TabPane("Analyze", self._analyze_content(), id="tab-analyze"),                                             │
│                                                                                                                                      │
│ ╭──────────────────────────────────────────────────── locals ────────────────────────────────────────────────────╮                   │
│ │ self = StegosaurusApp(title='🦕 STEGOSAURUS WRECKS', classes={'-dark-mode'}, pseudo_classes={'dark', 'focus'}) │                   │
│ ╰────────────────────────────────────────────────────────────────────────────────────────────────────────────────╯                   │
│                                                                                                                                      │
│ ~/ST3GG/.venv/lib/python3.12/site-packages/textual/widgets/_tabbed_content.py:225 in __init__   │
│                                                                                                                                      │
│   222 │   │   │   disabled: Whether the TabPane is disabled or not.                                                                  │
│   223 │   │   """                                                                                                                    │
│   224 │   │   self._title = self.render_str(title)                                                                                   │
│ ❱ 225 │   │   super().__init__(                                                                                                      │
│   226 │   │   │   *children, name=name, id=id, classes=classes, disabled=disabled                                                    │
│   227 │   │   )                                                                                                                      │
│   228                                                                                                                                │
│                                                                                                                                      │
│ ╭─────────────────────────────────── locals ───────────────────────────────────╮                                                     │
│ │ children = (<generator object StegosaurusApp._home_content at 0x107271e50>,) │                                                     │
│ │  classes = None                                                              │                                                     │
│ │ disabled = False                                                             │                                                     │
│ │       id = 'tab-home'                                                        │                                                     │
│ │     name = None                                                              │                                                     │
│ │     self = TabPane(id='tab-home')                                            │                                                     │
│ │    title = 'Home'                                                            │                                                     │
│ ╰──────────────────────────────────────────────────────────────────────────────╯                                                     │
│                                                                                                                                      │
│ ~/ST3GG/.venv/lib/python3.12/site-packages/textual/widget.py:502 in __init__                    │
│                                                                                                                                      │
│    499 │   │                                                                                                                         │
│    500 │   │   for child in children:                                                                                                │
│    501 │   │   │   if not isinstance(child, Widget):                                                                                 │
│ ❱  502 │   │   │   │   raise TypeError(                                                                                              │
│    503 │   │   │   │   │   f"Widget positional arguments must be Widget subclasses; not {child!                                      │
│    504 │   │   │   │   )                                                                                                             │
│    505 │   │   self._pending_children = list(children)                                                                               │
│                                                                                                                                      │
│ ╭──────────────────────────────────── locals ────────────────────────────────────╮                                                   │
│ │ _null_size = Size(width=0, height=0)                                           │                                                   │
│ │      child = <generator object StegosaurusApp._home_content at 0x107271e50>    │                                                   │
│ │   children = (<generator object StegosaurusApp._home_content at 0x107271e50>,) │                                                   │
│ │    classes = None                                                              │                                                   │
│ │   disabled = False                                                             │                                                   │
│ │         id = 'tab-home'                                                        │                                                   │
│ │     markup = True                                                              │                                                   │
│ │       name = None                                                              │                                                   │
│ │       self = TabPane(id='tab-home')                                            │                                                   │
│ ╰────────────────────────────────────────────────────────────────────────────────╯                                                   │
╰──────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────╯
TypeError: Widget positional arguments must be Widget subclasses; not <generator object StegosaurusApp._home_content at 0x107271e50>

The above exception was the direct cause of the following exception:

TypeError: StegosaurusApp(title='🦕 STEGOSAURUS WRECKS', classes={'-dark-mode'}, pseudo_classes={'dark', 'focus'}) compose() method 
returned an invalid result; Widget positional arguments must be Widget subclasses; not <generator object StegosaurusApp._home_content at
0x107271e50>

this PR fixes it.