feat: support mongo connection with user and password (#806)

src/app.config.ts

@@ -33,8 +33,12 @@ export const MONGO_DB = {
   dbName: argv.collection_name || (DEMO_MODE ? 'mx-space_demo' : 'mx-space'),
   host: argv.db_host || '127.0.0.1',
   port: argv.db_port || 27017,
+  user: argv.db_user || '',
+  password: argv.db_password || '',
   get uri() {
-    return `mongodb://${this.host}:${this.port}/${
+    let userPassword =
+      this.user && this.password ? this.user + ':' + this.password + '@' : ''
+    return `mongodb://${userPassword}${this.host}:${this.port}/${
       isTest ? 'mx-space_unitest' : this.dbName
     }`
   },