Increase test coverage

[dougiesquire]

This PR implements a number of tests across the package to increase test coverage

[codecov]

Codecov Report

Merging #99 (2edd089) into main (befdd5a) will increase coverage by 85.50%.
The diff coverage is 92.92%.

@@             Coverage Diff             @@
##             main      #99       +/-   ##
===========================================
+ Coverage   11.40%   96.91%   +85.50%     
===========================================
  Files          10        9        -1     
  Lines         526      518        -8     
===========================================
+ Hits           60      502      +442     
+ Misses        466       16      -450     

Impacted Files	Coverage Δ
src/access_nri_intake/cli.py	95.45% <69.23%> (+95.45%)	⬆️
src/access_nri_intake/source/utils.py	96.77% <91.89%> (+60.30%)	⬆️
src/access_nri_intake/catalog/__init__.py	100.00% <100.00%> (+100.00%)	⬆️
src/access_nri_intake/catalog/manager.py	98.21% <100.00%> (+98.21%)	⬆️
src/access_nri_intake/catalog/translators.py	99.08% <100.00%> (+99.08%)	⬆️
src/access_nri_intake/source/__init__.py	100.00% <100.00%> (ø)
src/access_nri_intake/source/builders.py	93.61% <100.00%> (+93.61%)	⬆️
src/access_nri_intake/utils.py	100.00% <100.00%> (+45.71%)	⬆️

... and 1 file with indirect coverage changes