Enable design complexity checks

[nickdrozd]

Type of Changes

	Type
✓	🔨 Refactoring

Description

Increase visibility into complexity by enabling Pylint's own design complexity checks.

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 93.19%. Comparing base (d394fb9) to head (ca256f2).
Report is 3 commits behind head on main.

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #2591      +/-   ##
==========================================
- Coverage   93.20%   93.19%   -0.01%     
==========================================
  Files          93       93              
  Lines       11065    11065              
==========================================
- Hits        10313    10312       -1     
- Misses        752      753       +1     

Flag	Coverage Δ
linux	93.07% <100.00%> (-0.01%)	⬇️
pypy	93.19% <100.00%> (-0.01%)	⬇️
windows	93.17% <100.00%> (-0.01%)	⬇️

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Files with missing lines	Coverage Δ
astroid/arguments.py	99.24% <ø> (ø)
astroid/brain/brain_builtin_inference.py	92.06% <ø> (ø)
astroid/brain/brain_dataclasses.py	92.72% <100.00%> (ø)
astroid/brain/brain_gi.py	23.02% <ø> (ø)
astroid/brain/brain_namedtuple_enum.py	92.88% <ø> (ø)
astroid/decorators.py	74.46% <ø> (-1.07%)	⬇️
astroid/filter_statements.py	98.90% <ø> (ø)
astroid/nodes/_base_nodes.py	94.25% <ø> (ø)
astroid/nodes/node_ng.py	93.00% <ø> (ø)
astroid/protocols.py	89.78% <ø> (ø)