ENH: Prepend Derived to CRS type name if CRS is derived

[snowman2]

• Closes ENH: Prepend "Derived" to the type name of the CRS if it is derived. #932
• Tests updated
• Fully documented, including history.rst for all changes and api/*.rst for new API

[codecov]

Codecov Report

Merging #939 (2b794ae) into master (8d2af39) will decrease coverage by 0.01%.
The diff coverage is 100.00%.

❗ Current head 2b794ae differs from pull request most recent head ab30426. Consider uploading reports for the commit ab30426 to get more accurate results

@@            Coverage Diff             @@
##           master     #939      +/-   ##
==========================================
- Coverage   96.24%   96.22%   -0.02%     
==========================================
  Files          20       20              
  Lines        1757     1750       -7     
==========================================
- Hits         1691     1684       -7     
  Misses         66       66              

Impacted Files	Coverage Δ
pyproj/crs/crs.py	97.97% <100.00%> (-0.02%)	⬇️
pyproj/crs/_cf1x8.py	98.66% <0.00%> (-0.03%)	⬇️
pyproj/datadir.py	100.00% <0.00%> (ø)
pyproj/transformer.py	94.68% <0.00%> (ø)

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