Refactor Python API

[awvwgk]

• make error handling cleaner by using functools
• error out if both a method and parameters are provided to damping function constructor

[lgtm-com]

This pull request introduces 1 alert when merging 89bbb17 into 982bb90 - view on LGTM.com

new alerts:

• 1 for 'import *' may pollute namespace

[codecov]

Codecov Report

Merging #137 (8926c6e) into main (982bb90) will decrease coverage by 0.04%.
The diff coverage is 90.09%.

@@            Coverage Diff             @@
##             main     #137      +/-   ##
==========================================
- Coverage   59.08%   59.04%   -0.05%     
==========================================
  Files          42       42              
  Lines        2977     3008      +31     
  Branches     1016     1016              
==========================================
+ Hits         1759     1776      +17     
- Misses        640      654      +14     
  Partials      578      578              

Impacted Files	Coverage Δ
python/dftd4/ase.py	76.00% <ø> (ø)
python/dftd4/test_qcschema.py	93.05% <ø> (ø)
python/dftd4/parameters.py	72.72% <70.27%> (-5.66%)	⬇️
python/dftd4/interface.py	96.87% <100.00%> (-0.04%)	⬇️
python/dftd4/library.py	87.93% <100.00%> (ø)
python/dftd4/qcschema.py	96.49% <100.00%> (ø)
python/dftd4/test_interface.py	100.00% <100.00%> (ø)
python/dftd4/test_library.py	100.00% <100.00%> (ø)
python/dftd4/test_parameters.py	100.00% <100.00%> (ø)
... and 1 more

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