feat: add release please and push workflow

[netanelC]

Closes: #4

[ronenkapelian]

nice to have:

add to readme:

Required GitHub Secrets

The following secrets must be configured in repository settings:

• ACR_URL - Azure Container Registry URL (e.g., myregistry.azurecr.io)
• ACR_PUSH_USER - Username/service principal for ACR
• ACR_PUSH_TOKEN - Password/token for ACR authentication

How Releases Work

1. Commit Changes: Use conventional commits (e.g., feat(scaler): add feature)
2. Merge to Master: Release-please creates/updates a release PR
3. Merge Release PR: Triggers Docker image build and push
4. Automatic Tagging: Images are tagged with version and `latest

Consider adding caching to the building process:

• name: Build and Push Docker Image
  uses: docker/build-push-action@v7
  with:
  context: ./${{ matrix.path }}
  push: true
  tags: '...'
  cache-from: type=registry,ref=${{ secrets.ACR_URL }}/${{ env.TEAM }}/${{ matrix.path }}:buildcache
  cache-to: type=registry,ref=${{ secrets.ACR_URL }}/${{ env.TEAM }}/${{ matrix.path }}:buildcache,mode=max

Ofer added something similar to opa-la mono-repo