feature: add methods to get annotations

[darshanime]

Signed-off-by: darshanime deathbullet@gmail.com

required for argoproj/argo-cd#4123

[codecov-commenter]

Codecov Report

Attention: Patch coverage is 87.50000% with 1 line in your changes missing coverage. Please review.

Project coverage is 56.10%. Comparing base (90979fe) to head (37f583d).
Report is 228 commits behind head on master.

Files with missing lines	Patch %	Lines
pkg/utils/kube/kube.go	87.50%	1 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##           master     #121      +/-   ##
==========================================
+ Coverage   55.91%   56.10%   +0.19%     
==========================================
  Files          25       25              
  Lines        2722     2727       +5     
==========================================
+ Hits         1522     1530       +8     
+ Misses       1053     1050       -3     
  Partials      147      147              

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[sonarqubecloud]

Kudos, SonarCloud Quality Gate passed!

0 Bugs
0 Vulnerabilities (and 0 Security Hotspots to review)
0 Code Smells

No Coverage information
0.0% Duplication

[alexmt]

@darshanime , looks like GetAppInstanceLabel is not used in GitOps engine. Instead of making changes here please move GetAppInstanceIdentifier with dependencies to argoproj/argo-cd#4123 and then we can remove GetAppInstanceLabel from GitOps engine.

[darshanime]

(closing as i wont be able to get back to it anytime soon)