apis: add HostApplications for out-of-band application

[zwzhang0107]

Ⅰ. Describe what this PR does

Define APIs and configurations to identify processes for these out-of-band applications

Ⅱ. Does this pull request fix one issue?

#1639

Ⅲ. Describe how to verify it

Ⅳ. Special notes for reviews

V. Checklist

• I have written necessary docs and comments
• I have added necessary unit tests and integration tests
• All checks passed in make test

[zwzhang0107]

/hold

[zwzhang0107]

/hold cancel

[codecov]

Codecov Report

Patch coverage: 100.00% and project coverage change: -0.51% ⚠️

Comparison is base (11f1bbb) 65.15% compared to head (d0d2379) 64.65%.
Report is 23 commits behind head on main.

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #1508      +/-   ##
==========================================
- Coverage   65.15%   64.65%   -0.51%     
==========================================
  Files         352      360       +8     
  Lines       36326    37248     +922     
==========================================
+ Hits        23669    24081     +412     
- Misses      10913    11400     +487     
- Partials     1744     1767      +23     

Flag	Coverage Δ
unittests	64.65% <100.00%> (-0.51%)	⬇️

Flags with carried forward coverage won't be shown. Click here to find out more.

Files Changed	Coverage Δ
pkg/features/koordlet_features.go	100.00% <100.00%> (ø)

... and 35 files with indirect coverage changes

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[saintube]

/lgtm

[koordinator-bot]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: hormes, saintube

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