Tried adding autodoc support

[flying-sheep]

Fixes #18 when ready

[codecov]

Codecov Report

Merging #19 into master will increase coverage by 1.48%.
The diff coverage is 97.05%.

@@            Coverage Diff             @@
##           master      #19      +/-   ##
==========================================
+ Coverage   84.19%   85.67%   +1.48%     
==========================================
  Files           8        9       +1     
  Lines         329      363      +34     
==========================================
+ Hits          277      311      +34     
  Misses         52       52              

Impacted Files	Coverage Δ
scanpydoc/elegant_typehints/autodoc_patch.py	96.77% <96.77%> (ø)
scanpydoc/elegant_typehints/__init__.py	100.00% <100.00%> (ø)
scanpydoc/elegant_typehints/return_tuple.py	90.74% <0.00%> (+1.85%)	⬆️

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