[Server] Support performing upgrades for existing dependent resources.

[MUzairS15]

Notes for Reviewers

This PR fixes #
During provisioning of a Design, Meshery Server detects dependent CRDs/operators and tries to install them via applying Helm Chart/raw manifests, in case where the required helm chart/manifests already exists it creates a conflict and the operation fails.
The PR adds the ability to perform an upgrade if the required resources already exists.

Signed commits

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[MUzairS15]

Docs update in #10998

[github-actions]

[codecov]

Codecov Report

Attention: Patch coverage is 0% with 6 lines in your changes missing coverage. Please review.

Project coverage is 9.14%. Comparing base (63478b2) to head (2786857).
Report is 194 commits behind head on master.

Files	Patch %	Lines
server/handlers/design_engine_handler.go	0.00%	5 Missing ⚠️
server/handlers/content_modifier.go	0.00%	1 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##           master   #11127      +/-   ##
==========================================
- Coverage    9.15%    9.14%   -0.01%     
==========================================
  Files         146      146              
  Lines       19243    19253      +10     
==========================================
  Hits         1761     1761              
- Misses      17180    17190      +10     
  Partials      302      302              

Flag	Coverage Δ
unittests	9.14% <0.00%> (-0.01%)	⬇️

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