Implement Kubectl command wrapper with apply, create, replace, and delete functionalities

[Warashi]

What this PR does:

This PR implements the kubectl wrapper for the k8s plugin.

Why we need it:

We need this to apply k8s manifests.

Which issue(s) this PR fixes:

Part of #4980

Does this PR introduce a user-facing change?:

• How are users affected by this change:
• Is this breaking change:
• How to migrate (if breaking change):

[codecov]

Codecov Report

Attention: Patch coverage is 0% with 186 lines in your changes missing coverage. Please review.

Project coverage is 25.68%. Comparing base (04c1f35) to head (0b66a3a).
Report is 3 commits behind head on master.

Files with missing lines	Patch %	Lines
.../app/pipedv1/plugin/kubernetes/provider/kubectl.go	0.00%	184 Missing ⚠️
...app/pipedv1/plugin/kubernetes/provider/manifest.go	0.00%	2 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##           master    #5380      +/-   ##
==========================================
- Coverage   25.76%   25.68%   -0.09%     
==========================================
  Files         445      446       +1     
  Lines       47947    48133     +186     
==========================================
+ Hits        12355    12361       +6     
- Misses      34630    34810     +180     
  Partials      962      962              

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[ffjlabo]

LGTM