Rework User interface with Material UI

[svrnm]

We started to transition UI components from custom to MUI. This will reduce the overhead of maintaining custom components and components from different vendors. The goal is to gradually transition the UI to one thats entirely based on MUI components.

TODO:

• https://github.com/svrnm/DemoMonkey/blob/main/src/components/shared/DropDownMenu.js
• https://github.com/svrnm/DemoMonkey/blob/main/src/components/shared/ErrorBox.js
• https://github.com/svrnm/DemoMonkey/blob/main/src/components/shared/Tabs.js and https://github.com/svrnm/DemoMonkey/blob/main/src/components/shared/Pane.js
• https://github.com/svrnm/DemoMonkey/blob/main/src/components/shared/Variable.js
• https://github.com/svrnm/DemoMonkey/blob/main/src/components/shared/WarningBox.js
• https://github.com/svrnm/DemoMonkey/blob/main/src/components/popup/ConfigurationList.js
• https://github.com/svrnm/DemoMonkey/blob/main/src/components/popup/PopupPageApp.js
• https://github.com/svrnm/DemoMonkey/blob/main/src/components/options/OptionsPageApp.js