chore(): Added CodeQL Analysis Workflow

[andoriyaprashant]

Description

This PR adds a GitHub Actions workflow for Codeql security scanning in the kubeslice-cli repository.
The workflow will run static analysis on Go code to detect potential vulnerabilities and maintain code quality.

• Runs on push and pull requests to master
• Scheduled weekly scan (Sunday 00:00 UTC)
• Configured for Go only
• Uses GitHub’s official codeql-action with minimal permissions for enhanced security

Fixes kubeslice/kubeslice#64

How Has This Been Tested?

The workflow was validated using GitHub Actions syntax checks and verified in a fork before opening this PR.

Test cases

• Workflow triggers on push to master
• Workflow triggers on PR to master
• Workflow runs on scheduled cron job
• CodeQL successfully initializes and analyzes Go code

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.

[pnavali]

@gourishkb @bharath-avesha please review