Add initial infrastructure and backup scripts for Gitea and homelab deployment

- Create README.md with project layout and quick start instructions
- Implement backup scripts for Gitea, including database and repository exports
- Add systemd service and timer for automated Gitea backups
- Develop bootstrap scripts for homelab and VPS setup
- Document architecture and restore procedures
- Configure Caddy reverse proxy and Docker Compose for service management
- Establish secrets management guidelines

stacks/gitea/.env.example

@@ -0,0 +1,3 @@
+POSTGRES_DB=gitea
+POSTGRES_USER=gitea
+POSTGRES_PASSWORD=REPLACE_ME