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/kuma/compose.yml

@@ -0,0 +1,8 @@
+services:
+  kuma:
+    image: louislam/uptime-kuma:1.23.16
+    restart: unless-stopped
+    ports:
+      - "3001:3001"
+    volumes:
+      - /srv/data/kuma:/app/data