refactor: use custom types

[12rambau]

Fix #128

take advantage of this to make mypy happy and reintroduce it into the pipelines

[codecov]

Codecov Report

Attention: 76 lines in your changes are missing coverage. Please review.

Comparison is base (ff54bf9) 0.00% compared to head (e6c455e) 0.00%.

Files	Patch %	Lines
geetools/User/__init__.py	0.00%	19 Missing ⚠️
geetools/Image/__init__.py	0.00%	13 Missing ⚠️
geetools/types.py	0.00%	13 Missing ⚠️
geetools/List/__init__.py	0.00%	8 Missing ⚠️
geetools/ComputedObject/__init__.py	0.00%	5 Missing ⚠️
geetools/Dictionary/__init__.py	0.00%	3 Missing ⚠️
geetools/String/__init__.py	0.00%	3 Missing ⚠️
geetools/Date/__init__.py	0.00%	2 Missing ⚠️
geetools/DateRange/__init__.py	0.00%	2 Missing ⚠️
geetools/FeatureCollection/__init__.py	0.00%	2 Missing ⚠️
... and 5 more

Additional details and impacted files

@@          Coverage Diff          @@
##            main    #160   +/-   ##
=====================================
  Coverage   0.00%   0.00%           
=====================================
  Files         52      53    +1     
  Lines       2919    2938   +19     
=====================================
- Misses      2919    2938   +19     

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