feat: design game file and parse it to mongo

* 取消用 README 來寫關卡說明

server/src/models/quest.js

@@ -1,12 +1,42 @@
 import { model, Schema } from 'mongoose'
 
+const stageSchema = new Schema({
+  name: {
+    type: String,
+    required: true,
+  },
+  condition: {
+    command: {
+      type: [String],
+      required: false,
+    },
+    output: {
+      type: [String],
+      required: false,
+    },
+    error: {
+      type: [String],
+      required: false,
+    },
+  },
+  responses: {
+    type: [String],
+    required: true,
+  },
+  hint: {
+    type: [String],
+    required: true,
+  },
+})
+
 const Quest = model(
   'Quest',
   new Schema({
     _id: String,
     title: String,
     order: Number,
-    content: String,
+    introduction: String,
+    stages: [stageSchema],
   })
 )