PMM-13292 Add INITIALIZATION_ERROR status for process initialization failure

[GuanqunYang193]

PMM-13292

what

• Added a new status of process, used for showing the process failed when initialization.
• Supervisor will initiate a port selection and restart the process initialization if failure is detected during the process initialization.

why

If the process fails to start (due to, for instance, a port conflict), the previous design will attempt to retry the process using the same port.

how

In this new commit, the supervisor will confirm the successful initialization of the process. If the initialization fails, it will make up to three attempts to start the process again.

[BupycHuk]

Looks good to me, just few comments

[codecov]

Codecov Report

Attention: Patch coverage is 86.66667% with 6 lines in your changes missing coverage. Please review.

Project coverage is 43.40%. Comparing base (7c580b4) to head (9055176).
Report is 1 commits behind head on main.

Files	Patch %	Lines
agent/agents/supervisor/supervisor.go	75.00%	4 Missing and 2 partials ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #2935      +/-   ##
==========================================
+ Coverage   43.33%   43.40%   +0.07%     
==========================================
  Files         399      399              
  Lines       41662    41692      +30     
==========================================
+ Hits        18054    18097      +43     
+ Misses      21593    21580      -13     
  Partials     2015     2015              

Flag	Coverage Δ
admin	11.67% <ø> (+0.05%)	⬆️
agent	53.03% <86.66%> (+0.28%)	⬆️
managed	44.41% <ø> (ø)
vmproxy	66.66% <ø> (ø)

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