lang/*.rc : Enforce 'aa-BB' filenames

Goal:
Use same resource filenames everywhere.

Example commit:
shlwapi module: 0.4.15-dev-354-gabe1dd3

Advice:
Do one module at a time.

–

Search links, to start with:

1. https://git.reactos.org/?p=reactos.git&a=search&h=HEAD&st=grep&s=%23include+%22lang%2F.%2B_.%2B\.rc&sr=1
   22 modules.
2. https://git.reactos.org/?p=reactos.git&a=search&h=HEAD&st=grep&s=%23include+%22lang%2F[^-]%2B\.rc&sr=1
   22 + 7 modules.