Add hot update files for layout and webpack with source maps

- Created new hot update JSON and JS files for app layout and webpack.
- Included eval-source-map for development purposes in the layout hot update.
- Added full hash retrieval function in the webpack hot update.

app/frontend/.next/static/webpack/056e6b2a157b801b.webpack.hot-update.json

@@ -0,0 +1 @@
+{"c":["app/layout","webpack"],"r":[],"m":[]}