Try to create cache directory on each CLI call

[CasperWA]

Fixes #82

As part of calling the CLI and loading/setting the global configuration options, the cache directory is created if it does not already exist.
If, for some reason, PermissionError is raised, i.e., if the user does not have the correct permissions to create folders in their own home folder, an appropriate error message will be written back to the user.

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Comparison is base (3a91cba) 90.98% compared to head (f99d75a) 89.70%.

Additional details and impacted files

@@            Coverage Diff             @@
##             main      #87      +/-   ##
==========================================
- Coverage   90.98%   89.70%   -1.28%     
==========================================
  Files          17       17              
  Lines         976      981       +5     
==========================================
- Hits          888      880       -8     
- Misses         88      101      +13     

Flag	Coverage Δ
docker	?
local	89.70% <100.00%> (+0.05%)	⬆️

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[francescalb]

works nicely