Add `synor deploy` command group for deploying web applications:
- `synor deploy push` - upload project to Synor Hosting
- `synor deploy init` - create synor.json configuration
- `synor deploy list` - list all deployments
- `synor deploy delete` - remove a deployment
Features:
- synor.json configuration parsing with build/routes/headers
- Framework auto-detection (Next.js, Vite, Astro, Angular, SvelteKit)
- Build command execution with install support
- Multipart file upload to storage gateway
- Deployment name validation with reserved word protection
- Content type detection for 20+ MIME types
Also adds Phase 9 milestone documentation and marks Synor Hosting
as 100% complete in the roadmap.
