feat(typings): Enhance typing support with withAppTypes and custom services throughout OHIF (#4090)

modes/basic-dev-mode/.webpack/webpack.dev.js

@@ -4,7 +4,7 @@ const SRC_DIR = path.join(__dirname, '../src');
 const DIST_DIR = path.join(__dirname, '../dist');
 
 const ENTRY = {
-  app: `${SRC_DIR}/index.js`,
+  app: `${SRC_DIR}/index.ts`,
 };
 
 module.exports = (env, argv) => {