enable source map in dev mode, add delay for nodemon starting

server/nodemon.json

@@ -1,6 +1,6 @@
 {
   "watch": ["dist", "swagger.yaml", "../quests", "../packages"],
   "ext": "js,ts,yaml,yml",
-  "exec": "node dist/index.js",
+  "exec": "node -r source-map-support/register dist/index.js",
   "delay": 200
 }