feat: Asynchronous initialization of Parse Server (#8232)

BREAKING CHANGE: This release introduces the asynchronous initialization of Parse Server to prevent mounting Parse Server before being ready to receive request; it changes how Parse Server is imported, initialized and started; it also removes the callback `serverStartComplete`; see the [Parse Server 6 migration guide](https://github.com/parse-community/parse-server/blob/alpha/6.0.0.md) for more details (#8232)

.babelrc

@@ -6,8 +6,9 @@
     "presets": [
         ["@babel/preset-env", {
             "targets": {
-                "node": "14"
-            }
+                "node": "14", 
+            },
+            "exclude": ["proposal-dynamic-import"]
         }]
     ],
     "sourceMaps": "inline"