Improve testing and fix issue with 'generic' entities

[gilesknap]

@MaxHerbs we seem to have introduced a bug that changes an entity's module name to "generic" unless the module has a specific handler.

I figure that is my bad for not having any proper tests.

So I've added some tests and fixed the issue.

But would appreciate you having a glance to see if what I have done makes sense for your generic handler.

b2dfac3 is the fix

Thanks

[codecov]

Codecov Report

Attention: Patch coverage is 96.42857% with 1 line in your changes missing coverage. Please review.

Project coverage is 84.32%. Comparing base (ee891b1) to head (b2dfac3).

Files with missing lines	Patch %	Lines
src/builder2ibek/__main__.py	75.00%	1 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main      #17      +/-   ##
==========================================
+ Coverage   80.40%   84.32%   +3.92%     
==========================================
  Files          22       22              
  Lines         398      402       +4     
==========================================
+ Hits          320      339      +19     
+ Misses         78       63      -15     

☔ View full report in Codecov by Sentry.
📢 Have feedback on the report? Share it here.

[MaxHerbs]

The fix looks good to me. I see where the bug was coming from.
I suspect most of the entities in my testing were covered by existing handlers, and I had been too focused on checking the global entities had been removed to spot any change of module name for the remaining entities.

The tests look far more thorough as well
Thanks

[gilesknap]

Thanks @MaxHerbs. I'm going to close this as it has CI errors and is part of my upcoming 'autosave' branch merge anyway.