Feat: add three way merge patch

[FogDong]

Signed-off-by: FogDong dongtianxin.tx@alibaba-inc.com

[codecov]

Codecov Report

Base: 91.47% // Head: 90.30% // Decreases project coverage by -1.16% ⚠️

Coverage data is based on head (af083cb) compared to base (3b2c88e).
Patch coverage: 86.30% of modified lines in pull request are covered.

Additional details and impacted files

@@            Coverage Diff             @@
##             main       #8      +/-   ##
==========================================
- Coverage   91.47%   90.30%   -1.17%     
==========================================
  Files          14       14              
  Lines         258      330      +72     
==========================================
+ Hits          236      298      +62     
- Misses         14       19       +5     
- Partials        8       13       +5     

Flag	Coverage Δ
unit-test	90.30% <86.30%> (-1.17%)	⬇️

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

Impacted Files	Coverage Δ
util/k8s/patch/patch.go	80.76% <80.76%> (ø)
util/k8s/object.go	94.11% <100.00%> (+9.50%)	⬆️
multicluster/utils.go

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