Add SchedulerObservedAffinityName to RB/CRB

[RainbowMango]

What type of PR is this?
/kind api-change

What this PR does / why we need it:
This PR added a SchedulerObservedAffinityName to ResourceBinding and ClusterResourceBinding according to multiple scheduling group proposal.

Which issue(s) this PR fixes:
Fixes #

Special notes for your reviewer:

Does this PR introduce a user-facing change?:

Introduced `SchedulerObservedAffinityName` to both `ResourceBinding` and `ClusterResourceBinding`.

[codecov-commenter]

Codecov Report

Merging #3163 (5dc94f4) into master (e523977) will increase coverage by 0.01%.
The diff coverage is n/a.

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@@            Coverage Diff             @@
##           master    #3163      +/-   ##
==========================================
+ Coverage   48.66%   48.67%   +0.01%     
==========================================
  Files         202      202              
  Lines       18138    18138              
==========================================
+ Hits         8827     8829       +2     
+ Misses       8822     8820       -2     
  Partials      489      489              

Flag	Coverage Δ
unittests	48.67% <ø> (+0.01%)	⬆️

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

Impacted Files	Coverage Δ
pkg/search/proxy/store/util.go	94.31% <0.00%> (+0.94%)	⬆️

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[XiShanYongYe-Chang]

/lgtm

[karmada-bot]

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