WIP: ✨ support cel selector

[haoqing0110]

Summary

Related issue(s)

Fixes #

[codecov]

Codecov Report

Attention: Patch coverage is 76.59574% with 11 lines in your changes missing coverage. Please review.

Project coverage is 63.80%. Comparing base (037aa3c) to head (ebeae14).
Report is 2 commits behind head on main.

Files with missing lines	Patch %	Lines
pkg/placement/plugins/predicate/predicate.go	23.07%	8 Missing and 2 partials ⚠️
pkg/placement/helpers/testing/builders.go	94.11%	1 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #693      +/-   ##
==========================================
+ Coverage   63.78%   63.80%   +0.02%     
==========================================
  Files         192      192              
  Lines       18606    18633      +27     
==========================================
+ Hits        11868    11889      +21     
- Misses       5759     5764       +5     
- Partials      979      980       +1     

Flag	Coverage Δ
unit	63.80% <76.59%> (+0.02%)	⬆️

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[qiujian16]

I would consider a CEL based selector, which could be more flexible.
e.g. could reference a score value

[openshift-ci]

[APPROVALNOTIFIER] This PR is NOT APPROVED

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[openshift-merge-robot]

PR needs rebase.

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