Feature/GitHub actions deploy

[vivekgsharma]

feat: add deploy.yml for manual github actions deployment

Issue being fixed or feature implemented

Added a GitHub Actions workflow for manual deployment, so that we can run ansible playbooks like platform updates directly from UI by passing network and tag.

What was done?

• Added .github/workflows/deploy.yml
• Setup SSH access for cloning configs and connecting to servers
• Workflow accepts network_name and deploy_tag inputs at trigger time

How Has This Been Tested?

• Tested workflow visibility in feature branch
• Will test full ansible run manually after PR is created

Breaking Changes

No breaking changes. Just adds a new manual GitHub Action. Safe to merge.

Checklist:

• [x] I have performed a self-review of my own code
• [x] I have commented my code, particularly in hard-to-understand areas
• [x] I have made corresponding changes to the documentation

For repository code-owners and collaborators only

• [ ] I have assigned this pull request to a milestone