add collection opendb-china-cities

collection/opendb-china-cities/collection.json

@@ -0,0 +1,25 @@
+{
+  "schema": {
+    "bsonType": "object",
+    "required": ["code", "name"],
+    "properties": {
+      "_id": {
+        "description": "ID，系统自动生成"
+      },
+      "code": {
+        "bsonType": "string",
+        "description": "编码",
+        "parentKey": "parent_code"
+      },
+      "name": {
+        "bsonType": "string",
+        "description": "名称"
+      },
+      "parent_code": {
+        "bsonType": "string",
+        "description": "父级编码"
+      }
+    }
+  },
+  "index": []
+}

collection/opendb-china-cities/package.json

@@ -0,0 +1,17 @@
+{
+  "name": "@opendb/opendb-china-cities",
+  "version": "0.0.1",
+  "description": "opendb-china-cities",
+  "keywords": ["中国城市省市区", "省", "市", "区"],
+  "opendb": {
+    "title": "中国城市省市区",
+    "type": "collection",
+    "contributors": [
+      {
+        "name": "DCloud",
+        "email": "",
+        "homepage": "https://gitee.com/dcloud/opendb"
+      }
+    ]
+  }
+}