Suggestion: Change return types to list[int] of pattern_scan_all()

[Harding-Stardust]

Right now, it's an int or list[int] or None

Pymem/pymem/pattern.py

Line 153 in 8cf1323

int, list, optional

I suggest to always return a list[int], if no hits then it's an empty list otherwise it's filled with the results.
Makes the code much cleaner to work with.

[StarrFox]

this is something we could look at for 2.0 since people could be relying on current behavior