Add .prettierrc config file to APPM store react app

components/application-mgt/org.wso2.carbon.device.application.mgt.store.ui/react-app/.prettierrc

@@ -0,0 +1,5 @@
+{
+  "singleQuote": true,
+  "trailingComma": "all",
+  "parser": "flow"
+}

components/application-mgt/org.wso2.carbon.device.application.mgt.store.ui/react-app/package.json

@@ -90,6 +90,7 @@
     "build_prod": "NODE_ENV=production NODE_OPTIONS=--max_old_space_size=4096 webpack -p --display errors-only --hide-modules",
     "build_dev": "NODE_ENV=development webpack -d --watch ",
     "server": "node-env-run server --exec nodemon | pino-colada",
-    "dev2": "run-p server start"
+    "dev2": "run-p server start",
+    "lint": "eslint \"src/**/*.js\""
   }
 }