Adds errors to the Contract class

[sentilesdal]

• add plumbing to add errors to the contract
• regen types
• add tests
• get input types dynamically
• add decoding to contract errors
• add method to decode any contract error

[codecov-commenter]

Codecov Report

Attention: 59 lines in your changes are missing coverage. Please review.

Comparison is base (8f1af44) 67.01% compared to head (8bfbcb9) 67.49%.

Files	Patch %	Lines
pypechain/test/errors/types/utilities.py	30.76%	27 Missing ⚠️
pypechain/test/errors/types/ErrorsContract.py	83.33%	26 Missing ⚠️
pypechain/render/contract.py	25.00%	3 Missing ⚠️
pypechain/utilities/abi.py	50.00%	2 Missing ⚠️
pypechain/templates/utilities.py	83.33%	1 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #102      +/-   ##
==========================================
+ Coverage   67.01%   67.49%   +0.47%     
==========================================
  Files          46       49       +3     
  Lines        2101     2307     +206     
==========================================
+ Hits         1408     1557     +149     
- Misses        693      750      +57     

Flag	Coverage Δ
unittests	67.49% <71.90%> (+0.47%)	⬆️

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