Add systemd and Caddy deployment configs

deploy/todolist.Caddyfile

@@ -0,0 +1,10 @@
+:8081 {
+	handle_path /api/* {
+		reverse_proxy 127.0.0.1:8000
+	}
+
+	handle {
+		root * /home/scaiuser/dwh_apps/fastapi-todolist/frontend
+		file_server
+	}
+}

deploy/todolist.service

@@ -1,13 +1,14 @@
 [Unit]
 Description=TodoList FastAPI service
-After=network.target
+After=network.target mysql.service
 
 [Service]
 Type=simple
-User=dwh
-WorkingDirectory=/home/dwh/code/fastapi_todolist
-ExecStart=/home/dwh/code/fastapi_todolist/.venv/bin/uvicorn main:app --host 127.0.0.1 --port 8000
-Restart=always
+User=scaiuser
+WorkingDirectory=/home/scaiuser/dwh_apps/fastapi-todolist
+EnvironmentFile=/home/scaiuser/dwh_apps/fastapi-todolist/.env
+ExecStart=/home/scaiuser/dwh_apps/fastapi-todolist/.venv/bin/uvicorn main:app --host 127.0.0.1 --port 8000
+Restart=on-failure
 RestartSec=3
 Environment=PYTHONUNBUFFERED=1