feat: split tag-release workflow and make changelog generation optional

[anket-cd]

Description

Type of Change

This PR refactors the tag-release workflow to improve maintainability, reliability, and flexibility. The workflow is now split into two separate, reusable workflows that can be used independently or together.

📋 Changes Overview

1. Workflow Split

• release-tag.yml: Handles tag creation based on PR labels (major/minor/patch)
• release-changelog.yml: Handles changelog generation and release creation (reusable)

2. Optional Changelog Generation

• Added create_changelog input (boolean, default: true) to control whether changelog runs

---

• 🐛 Bug fix
• ✨ New workflow
• 📝 Documentation update
• 🔧 Workflow enhancement
• 🎨 Code style/formatting
• ♻️ Refactoring
• ⚡ Performance improvement
• 🔒 Security improvement

Workflow Category

• Terraform (tf-*)
• CloudFormation (cf-*)
• Docker (docker-*)
• Helm (helm-*)
• PR Automation (pr-*)
• Security (security-*)
• Release (release-*)
• Notification (notify-*)
• AWS-specific (aws-*)
• GCP-specific (gcp-*)
• YAML Lint (yl-*)
• Other

Checklist

• My code follows the project's style guidelines
• I have performed a self-review of my code
• I have commented my code, particularly in hard-to-understand areas
• I have updated the documentation accordingly
• My changes generate no new warnings
• I have added tests that prove my fix is effective or that my feature works
• New and existing unit tests pass locally with my changes
• Any dependent changes have been merged and published

Testing

https://github.com/anket-cd/shared-workflows/actions/runs/23588855629/workflow

Screenshots/Documentation

[dverma-cd]

LGTM

[dverma-cd]

LGTM