Enhance README and RPC for package management

- Added instructions to README.md for building an ISO from source and flashing it to USB.
- Introduced a new RPC method for package installation, including security checks and container management.
- Updated Docker and Podman integration in build scripts to support both container runtimes.
- Enhanced Nginx configuration for improved timeout settings and WebSocket support.
- Added new app metadata for additional applications in the Docker package scanner.

scripts/archipelago-tailscale.service

@@ -0,0 +1,15 @@
+[Unit]
+Description=Configure Nginx for Tailscale Access
+After=archipelago.service
+Requires=archipelago.service
+ConditionPathExists=/sys/class/net/tailscale0
+
+[Service]
+Type=oneshot
+RemainAfterExit=yes
+ExecStart=/opt/archipelago/scripts/configure-tailscale-nginx.sh
+StandardOutput=journal
+StandardError=journal
+
+[Install]
+WantedBy=multi-user.target