Add bitarray for Python

[gregorian-knot]

Please complete the following information about the package:

• Package name: bitarray
• Language name: Python
• Website: https://pypi.org/project/bitarray/

Following are optional, but will help us consider adding:

• Why is this useful? There is no python built-in feature to create bit arrays, which are useful in holding huge volumes of data.
• Example Code:

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:+1: reaction might help to get this request prioritized.

[error256]

As a simpler alternative for now, there's gmpy2 with mutable integers: https://gmpy2.readthedocs.io/en/latest/advmpz.html#the-xmpz-type