Enhancement: Better detection of pip-requirement files

The definition in package.json of pip-requirements could be improved and simplified in filenamePatterns.

At the moment, it does not recognize out of the box the following files, which are quite common in Django projects (before the Poetry era though):

requirements/
├── base.txt
├── prod.txt
└── dev.txt

[IanMatthewHuff]

Looks good. All the example files were picked up as pip requirements file for me given the folder structure.

[brettcannon]

I’m going to skip the voting period based on the fact Twitter implicitly voted enough for this. 😄