massCreateModules breaks with . directories

[christianalfoni]

To reproduce:

1. Fork the following repo: https://github.com/AJ-7885/WebChannel
2. Load the repo on Codesandbox, fork it and link it
3. Add a new file to .github/workflows/someFile.someExtension
4. Refresh sandbox and do a sync

You will get an error about "title alread used" or similar. This is related to our denormalize logic used by massCreateModules. In this picture you see what happens:

For some reason our denormalize is passing in the workflows folder, but it should not do that. It should look more like this, here with a normal folder:

You find the denormalize file within codesandbox-import-utils.

[christianalfoni]

This should now be fixed