Added CI workflow

[yoursanonymous]

• Please check if the PR fulfills these requirements

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• What kind of change does this PR introduce? (Bug fix, feature, docs update, ...)

/kind feature

• What this PR does / why we need it:
  This PR introduces automated CI/CD checks via GitHub Actions to improve code quality and catch issues before merging.

• Which issue(s) this PR fixes:

[gemini-code-assist]

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