add cloudbaseRoot to platformJson2ProjectJson for weapp cloudbase config.

packages/webpack-uni-pages-loader/lib/platforms/mp.js

@@ -19,7 +19,7 @@ const {
 
 const {
   hasOwn,
-  parseStyle,
+  parseStyle,
   trimMPJson
 } = require('../util')
 
@@ -113,7 +113,8 @@ const platformJson2ProjectJson = {
   projectname: defaultCopy,
   packOptions: defaultCopy,
   debugOptions: defaultCopy,
-  scripts: defaultCopy
+  scripts: defaultCopy,
+  cloudbaseRoot: defaultCopy
 }
 
 function copyToJson (json, fromJson, options) {
@@ -320,4 +321,4 @@ module.exports = function (pagesJson, manifestJson, project = {}) {
       }
     }
   }
-}
+}