Add local image build scripts and testing setup

[JoshuaAFerguson]

Add comprehensive scripts for local development and testing workflow:

• local-build.sh: Build all Docker images locally with version tagging

  • Supports building individual components (controller, api, ui)
  • Includes build arguments for versioning and git commit info
  • Color-coded output and error handling

• local-deploy.sh: Deploy to local Kubernetes using Helm

  • Automatically checks for required images
  • Creates namespace and applies CRDs
  • Waits for pods to be ready
  • Provides access instructions for UI and API
  • Supports customization via environment variables

• local-teardown.sh: Complete cleanup and teardown

  • Uninstalls Helm release
  • Deletes namespace and all resources
  • Removes CRDs
  • Cleans up Docker images and containers
  • Optional build cache cleanup
  • Safety confirmation prompt

• LOCAL_TESTING.md: Comprehensive guide

  • Quick start instructions
  • Complete development cycle workflow
  • Troubleshooting section
  • Advanced usage examples
  • Script reference documentation

These scripts enable a complete local testing cycle:

1. Build images locally
2. Deploy to local cluster
3. Test changes
4. Teardown and clean up artifacts
5. Repeat as needed

All scripts include:

• Prerequisite checking
• Error handling
• Color-coded output
• Detailed logging
• Configurable via environment variables