UI: Also output memory usage before generating source code.
UI: Also output memory usage before generating source code.

* This is significantly lower and it's questionable if that should
  be allowed, or if we are not missing cleanups here to release
  e.g. constant code caches.

kayhayen/Nuitka,kayhayen/Nuitka,kayhayen/Nuitka,kayhayen/Nuitka