chore(): Added CodeQL Analysis Workflow

[andoriyaprashant]

Description

This PR adds a GitHub Actions workflow to enable Codeql static code analysis for Go code in the kubeslice-controller repository.
The workflow will help proactively identify potential vulnerabilities, improve code quality, and maintain long-term security compliance.

Key details:

• Runs on pushes and pull requests to the master branch
• Scheduled weekly scans every Sunday at 00:00 UTC
• Uses GitHub’s official codeql-action for Go
• Requires minimal permissions to write security events

Fixes kubeslice/kubeslice#64

How Has This Been Tested?

The workflow has been validated by:

• Running a syntax check to ensure GitHub Actions compatibility
• Confirming CodeQL initialization and analysis on Go repositories in a test fork

Checklist:

• The title of the PR states what changed and the related issues number (used for the release note).
• Does this PR requires documentation updates?
• I've updated documentation as required by this PR.
• I have performed a self-review of my own code.
• I have commented my code, particularly in hard-to-understand areas.
• I have tested it for all user roles.
• I have added all the required unit test cases.