Processes construct their own supervision

[WilliamRoebuck]

Continuation of the refactoring started in #477. This PR moves alive supervision construction to the ProcessInfoNode constructor.

In addition, it:

• Resolves Alive monitor refactoring: Allow components to register their own alive supervision #486
• Combines AliveMonitorThread & AliveMonitorImpl
• Moves the supervision event buffer into the PHM daemon object
  • Previously, launch manager held a reference to the buffer to push supervision deactivation/activation events. With the SupervisionHandle, this is no longer needed
  • The buffer is now held by the ObservableEventReader
• Corrected check in getTimeForReport
• Removed most of supervision_control_client
  • Mostly made redundant by the alive monitor's ownership of the buffer

TODO

• Simplify/Remove PhmDaemon::construct method. This really just needs to reserve the size of a vector and LM should calculate what size to reserve
• Review constness on new methods/parameters (probably most can be made const)
• Add brief docs for new methods, update docs where params have changed
• Update UTs

[github-actions]

License Check Results

🚀 The license check job ran with the Bazel command:

bazel run --lockfile_mode=error //:license-check

Status: ⚠️ Needs Review

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[License Check Output]
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Analyzing: target //:license-check (65 packages loaded, 10 targets configured)

Analyzing: target //:license-check (145 packages loaded, 1147 targets configured)

Analyzing: target //:license-check (156 packages loaded, 6447 targets configured)

Analyzing: target //:license-check (158 packages loaded, 9359 targets configured)

Analyzing: target //:license-check (168 packages loaded, 9417 targets configured)

INFO: Analyzed target //:license-check (173 packages loaded, 11555 targets configured).
[7 / 15] [Prepa] Expanding template external/score_tooling+/dash/tool/formatters/_dash_format_converter_stage2_bootstrap.py [for tool]
INFO: Found 1 target...
Target //:license.check.license_check up-to-date:
  bazel-bin/license.check.license_check
  bazel-bin/license.check.license_check.jar
INFO: Elapsed time: 19.834s, Critical Path: 0.25s
INFO: 16 processes: 4 disk cache hit, 12 internal.
INFO: Build completed successfully, 16 total actions
INFO: Running command line: bazel-bin/license.check.license_check ./formatted.txt <args omitted>
usage: org.eclipse.dash.licenses.cli.Main [-batch <int>] [-cd <url>]
       [-confidence <int>] [-ef <url>] [-excludeSources <sources>] [-help] [-lic
       <url>] [-project <shortname>] [-repo <url>] [-review] [-summary <file>]
       [-timeout <seconds>] [-token <token>]

[danth]

This looks like a good cleanup, just a few small tweaks 😄

[MaciejKaszynski]

nit picks

[NicolasFussberger]

Looks great me! Feel free defer any open comments to the already open follow-up PR.

[TimoSteuerwaldETAS]

Nice work! 👍