create nvmrc and add babel plugin in dev dependencies

create nvmrc and add babel plugin in dev dependencies

package.json

@@ -49,7 +49,7 @@
     "@babel/eslint-parser": "^7.19.1",
     "@babel/preset-env": "^7.10.4",
     "@babel/preset-react": "^7.10.4",
-    "@babel/plugin-proposal-private-property-in-object":"^7.21.11" ,
+    "@babel/plugin-proposal-private-property-in-object": "^7.21.11",
     "@material-ui/core": "^4.11.0",
     "@material-ui/icons": "^4.9.1",
     "@material-ui/lab": "^4.0.0-alpha.56",