Add CLI tests or exclude CLI directory from code coverage

[DiamondJoseph]

CLI calls to CLI REST client calls to REST API calls into code.
Mocking out the REST API to ensure that the CLI is calling the correct endpoints would be a useful sanity check.
Currently CLI + CLI REST client adds ~3 lines of uncovered "code" for every endpoint which brings down the reported code coverage of functional code.
Is there an easy way to test Click commands in situ?

Or: Move CLI client into its own repository?

[stan-dot]

connected to #242

[stan-dot]

#364 is very closely connected

[stan-dot]

doing this functionality as part of the autogenerated client part in #441

[stan-dot]

Mocking out the REST API to ensure that the CLI is calling the correct endpoints would be a useful sanity check.
that is effectively done in #441 , we could close this as redundant

[stan-dot]

will do this after migration to pydantic 2 #449 and code auto gen ( #364 )