Remove dependency on DocStringExtensions

[gdalle]

DI deps

• Remove dependency on DocStringExtensions (see Reduce load time? #416)

[codecov-commenter]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 98.52%. Comparing base (1069266) to head (e395746).
Report is 1 commits behind head on main.

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #450      +/-   ##
==========================================
- Coverage   98.53%   98.52%   -0.01%     
==========================================
  Files         107      107              
  Lines        4295     4271      -24     
==========================================
- Hits         4232     4208      -24     
  Misses         63       63              

Flag	Coverage Δ
DI	98.67% <ø> (-0.02%)	⬇️
DIT	98.22% <ø> (ø)

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

☔ View full report in Codecov by Sentry.
📢 Have feedback on the report? Share it here.