proposal: enhanced scheduler extension

[eahydra]

Signed-off-by: Joseph joseph.t.lee@outlook.com

Ⅰ. Describe what this PR does

Supplement the lack of proposals on enhancing the scheduler extension mechanism.

Ⅱ. Does this pull request fix one issue?

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

[codecov]

Codecov Report

Base: 68.14% // Head: 68.10% // Decreases project coverage by -0.03% ⚠️

Coverage data is based on head (4fce3ee) compared to base (339a4a2).
Patch has no changes to coverable lines.

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #742      +/-   ##
==========================================
- Coverage   68.14%   68.10%   -0.04%     
==========================================
  Files         212      212              
  Lines       24112    24112              
==========================================
- Hits        16431    16422       -9     
- Misses       6548     6553       +5     
- Partials     1133     1137       +4     

Flag	Coverage Δ
unittests	68.10% <ø> (-0.04%)	⬇️

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

Impacted Files	Coverage Δ
pkg/koordlet/runtimehooks/reconciler/reconciler.go	71.57% <0.00%> (-7.37%)	⬇️
pkg/util/httputil/reverseproxy.go	84.30% <0.00%> (-0.54%)	⬇️

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[hormes]

/lgtm

[saintube]

/lgtm

[koordinator-bot]

[APPROVALNOTIFIER] This PR is APPROVED

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

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