Add automated versioning and rollback deployment workflow

[IvanildoBarauna]

Summary

This PR introduces automated semantic versioning and a rollback deployment capability to the CI/CD pipeline. The deployment workflow now automatically computes and tags releases, creates GitHub releases, and a new manual rollback workflow enables quick recovery to previous versions.

Key Changes

• Automated Versioning: Added version computation logic that automatically increments patch versions based on the latest GitHub release, eliminating manual version management
• GitHub Release Creation: The deployment workflow now automatically creates GitHub releases with generated release notes for each deployment
• Docker Image Tagging: Updated image tagging strategy to use computed semantic versions and latest tag instead of hardcoded main branch tag
• Rollback Workflow: Added new rollback.yml workflow that enables manual rollback to any previous release or auto-detects the previous version
• Dynamic Configuration: Updated docker-compose production configuration to use dynamically computed versions instead of hardcoded 1.0.0
• Permissions Update: Changed contents permission from read to write in the deployment workflow to support GitHub release creation

Implementation Details

• Version computation extracts the latest release tag, increments the patch version, and stores it as an environment variable for use throughout the workflow
• The rollback workflow supports both manual version specification and automatic detection of the previous release
• Both workflows use SSH to deploy to the VPS and pull the appropriate versioned container images
• Datadog environment variables are properly configured with the computed version for observability

https://claude.ai/code/session_01XtrhxKutum5sw6dqDeT8JY