Cache find_module calls

[correctmost]

Type of Changes

	Type
✓	🔨 Refactoring

Description

This PR speeds up the linting of codebases with lots of imports like yt-dlp.

Stats

Before

   ncalls  tottime  percall  cumtime  percall filename:lineno(function)
    63840    0.702    0.000    3.424    0.000 astroid/interpreter/_import/spec.py:129(find_module)
    38635    0.057    0.000    1.358    0.000 astroid/interpreter/_import/spec.py:287(find_module)
    38635    0.056    0.000    0.711    0.000 astroid/interpreter/_import/spec.py:224(find_module)
    38635    0.052    0.000    1.774    0.000 astroid/interpreter/_import/spec.py:263(find_module)

Command	Mean [s]	Min [s]	Max [s]	Relative
pylint --recursive=y .	32.063 ± 0.137	31.820	32.287	1.00

After

   ncalls  tottime  percall  cumtime  percall filename:lineno(function)
    18166    0.226    0.000    1.194    0.000 astroid/interpreter/_import/spec.py:129(find_module)
     6689    0.013    0.000    0.629    0.000 astroid/interpreter/_import/spec.py:225(find_module)
     6689    0.011    0.000    0.278    0.000 astroid/interpreter/_import/spec.py:290(find_module)
     6689    0.009    0.000    0.311    0.000 astroid/interpreter/_import/spec.py:265(find_module)

Command	Mean [s]	Min [s]	Max [s]	Relative
pylint --recursive=y .	30.058 ± 0.142	29.917	30.283	1.00

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 92.99%. Comparing base (71f5c0c) to head (28e13e9).
Report is 1 commits behind head on main.

Additional details and impacted files

@@           Coverage Diff           @@
##             main    #2543   +/-   ##
=======================================
  Coverage   92.98%   92.99%           
=======================================
  Files          93       93           
  Lines       11047    11056    +9     
=======================================
+ Hits        10272    10281    +9     
  Misses        775      775           

Flag	Coverage Δ
linux	92.86% <100.00%> (+<0.01%)	⬆️
pypy	92.99% <100.00%> (+<0.01%)	⬆️
windows	92.97% <100.00%> (+<0.01%)	⬆️

Flags with carried forward coverage won't be shown. Click here to find out more.

Files with missing lines	Coverage Δ
astroid/interpreter/_import/spec.py	97.58% <100.00%> (+0.08%)	⬆️
astroid/manager.py	89.91% <100.00%> (+0.08%)	⬆️

[Pierre-Sassoulas]

LGTM