Fix issue where TypeScript errors in scripts/ folder weren't picked up

Summary: This diff fixes an issue where the `scripts` folder wasn't automatically type checked by TypeScript, and as a result `yarn flipper-server` was broken atm.

Reviewed By: nikoant

Differential Revision: D33348825

fbshipit-source-id: 059a834cacb881d45ae4b0933af3f1feabb90182

desktop/tsc-root/tsconfig.json

@@ -41,6 +41,9 @@
     },
     {
       "path": "../test-utils"
+    },
+    {
+      "path": "../scripts"
     }
   ]
 }