Memstate Module

[YassineLr]

integrating memstate module into CoreLens.

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[brenns10]

Here's a quick review. In addition to the comments on the code below, here are a few quick and easy fixes.

(1) Use git commit -s (sign-off) for your commits, so they include your "Signed-off-by" tag. See prior commits in history for examples.
(2) Check the following pre-commit findings:

drgn_tools/memstate.py:111:25: E221 multiple spaces before operator
drgn_tools/memstate.py:365:27: E226 missing whitespace around arithmetic operator
drgn_tools/memstate.py:365:33: E225 missing whitespace around operator
drgn_tools/memstate.py:365:45: E225 missing whitespace around operator
drgn_tools/memstate.py:383:31: E226 missing whitespace around arithmetic operator
drgn_tools/memstate.py:383:37: E225 missing whitespace around operator
drgn_tools/memstate.py:383:49: E225 missing whitespace around operator
drgn_tools/memstate.py:499:25: E231 missing whitespace after ','
drgn_tools/memstate.py:503:62: E231 missing whitespace after ','

[brenns10]

This looks really great! Thank you!