Fix bug when .config does not exist. Add test.

[BSchilperoort]

Fixes #153 . The tests have been modified to be able to catch this error.
Additionally, the version has been bumped to 1.4.1 in preparation for a new release.

As a bonus I have added a pre-commit config that will run hatch run format, allowing devs to use pre-commit, while it should stay in sync with the linter configuration.

[codecov]

Codecov Report

Merging #154 (43692a3) into main (127494b) will not change coverage.
The diff coverage is 100.00%.

Additional details and impacted files

@@           Coverage Diff           @@
##             main     #154   +/-   ##
=======================================
  Coverage   99.66%   99.66%           
=======================================
  Files          14       14           
  Lines         601      601           
=======================================
  Hits          599      599           
  Misses          2        2           

[sverhoeven]

I tested code successfully with

docker run -ti --rm python:3.10 bash
ls ~/.config
ls: cannot access '/root/.config': No such file or directory
pip install 'git+https://github.com/eWaterCycle/era5cli.git@fix-153#egg=era5cli'
era5cli config --uid ....--key ....
Keys succesfully validated and stored in /root/.config/era5cli/cds_key.txt
rm -r ~/.config/era5cli/
era5cli config --uid ...--key ...
Keys succesfully validated and stored in /root/.config/era5cli/cds_key.txt

Some documentation about pre-commit would be nice.

[sverhoeven]

To use the pre-commit it has to be installed with pip install pre-commit. Can that be added to docs/general_development.md?

I was able to run pre-commit run --all-files ok.

[BSchilperoort]

Thank you for the review, @sverhoeven ! I have added instructions on pre-commit to the dev guide.