Makes the dev target support auto reloading of the server

package.json

@@ -4,7 +4,7 @@
   "description": "Self-hosted audiobook and podcast server",
   "main": "index.js",
   "scripts": {
-    "dev": "node index.js",
+    "dev": "nodemon --watch server index.js",
     "start": "node index.js",
     "client": "cd client && npm ci && npm run generate",
     "prod": "npm run client && npm ci && node prod.js",
@@ -37,5 +37,8 @@
     "node-tone": "^1.0.1",
     "socket.io": "^4.4.1",
     "xml2js": "^0.4.23"
+  },
+  "devDependencies": {
+    "nodemon": "^2.0.20"
   }
 }