rename left ts files to tsx and ban ts file extension

Summary: mass files rename

Reviewed By: passy

Differential Revision: D33890304

fbshipit-source-id: c057ac9fe87dd7659597c85d640619b93e1ff0e6

desktop/plugins/package.json

@@ -24,6 +24,6 @@
     "react-dom": "*"
   },
   "scripts": {
-    "postinstall": "cd .. && ./ts-node ./plugins/postinstall.ts"
+    "postinstall": "cd .. && ./ts-node ./plugins/postinstall.tsx"
   }
 }