feat: 1,4,6 - scene canvas editor, systemd service, F1 composite dashboard

- Scene editor: drag-drop dashboards from sidebar to canvas, reposition, delete placements, save/load
- Systemd service: turbosu.service with frpc dependency, restart on failure
- F1 composite: speed/RPM/lap/gear/throttle/brake/fuel/DRS, 16:9, NEXT ART font

ecosystem/turbosu.service

@@ -0,0 +1,17 @@
+[Unit]
+Description=TurboSu Service
+After=network-online.target
+Requires=frpc.service
+
+[Service]
+Type=simple
+User=Aska
+WorkingDirectory=/home/Aska/Project/TurboSu
+ExecStart=/home/Aska/Project/TurboSu/venv/bin/python /home/Aska/Project/TurboSu/app.py
+Restart=on-failure
+RestartSec=5
+StandardOutput=append:/home/Aska/Project/TurboSu/logs/turbosu.log
+StandardError=append:/home/Aska/Project/TurboSu/logs/turbosu.log
+
+[Install]
+WantedBy=multi-user.target