Add verbosity option to C-API

[awvwgk]

Expose option to set verbosity in C-API and export verbosity to Python Calculator setter.

Closes #53

[codecov]

Codecov Report

Merging #54 (46e856b) into main (216fad1) will decrease coverage by 0.02%.
The diff coverage is 75.86%.

@@            Coverage Diff             @@
##             main      #54      +/-   ##
==========================================
- Coverage   73.17%   73.15%   -0.03%     
==========================================
  Files         119      119              
  Lines       15249    15262      +13     
  Branches     4497     4501       +4     
==========================================
+ Hits        11159    11165       +6     
- Misses       2068     2079      +11     
+ Partials     2022     2018       -4     

Impacted Files	Coverage Δ
app/driver_run.f90	24.61% <0.00%> (-0.79%)	⬇️
python/tblite/interface.py	89.58% <ø> (ø)
src/tblite/api/context.f90	70.90% <80.00%> (+2.90%)	⬆️
src/tblite/xtb/singlepoint.f90	78.23% <88.23%> (+1.31%)	⬆️
python/tblite/library.py	92.14% <100.00%> (+0.12%)	⬆️
src/tblite/output/property.f90	0.00% <0.00%> (-55.56%)	⬇️

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