Add Trunk resource controller implementation

[aldokimi]

Summary

Adds complete Trunk resource controller implementation with subport implementation (which is necessary for the Trunk type), dependency handling, and comprehensive test coverage.

Key Features

• Full CRUD operations for OpenStack trunks
• Subport reconciliation (add/remove/update)
• Dependency management (ports, projects)
• Resource adoption and import support
• Comprehensive test coverage

Testing

• Unit tests for all actuator methods
• Test coverage 35.7%
• All tests passing

E2E Testing

-All resources are created in the K8s side -All resources are created in the Openstack side -All CRUD functionalities are passing the tests

Checklist

• [x] Code follows project style guidelines
• [x] Tests added/updated and passing
• [x] Documentation updated
• [x] Generated files included
• [x] No breaking changes

[aldokimi]

This fixes #364 which is mentioned as well in #577

[github-actions[bot]]

Failed to assess the semver bump. See logs for details.