[WIP] phase out {assertthat} and switch to {cli}

[PietrH]

• Check coverage
• fix check_value
• Drop check_value() helper, and replace with tolower() and rlang::arg_match()
• Do we need to include `list_values() ?

[codecov]

Codecov Report

❌ Patch coverage is 81.25000% with 3 lines in your changes missing coverage. Please review.
✅ Project coverage is 94.39%. Comparing base (6cec15b) to head (2edf1d5).
⚠️ Report is 24 commits behind head on main.

Files with missing lines	Patch %	Lines
R/download_acoustic_dataset.R	25.00%	3 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #566      +/-   ##
==========================================
- Coverage   94.71%   94.39%   -0.32%     
==========================================
  Files          33       32       -1     
  Lines        1532     1499      -33     
==========================================
- Hits         1451     1415      -36     
- Misses         81       84       +3     

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