Fix episode not found on import stopping import

[daften]

This fixes the additional item I mentioned in #629 (comment)

I updated and added automatic tests that should capture the changed behaviour too. I placed the error in the episode method, that seemed the best place to me, but I can easily move it to e.g. the get_media_metadata method.

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 84.31%. Comparing base (36c55e1) to head (fcec81f).
Report is 1 commits behind head on dev.

Additional details and impacted files

@@            Coverage Diff             @@
##              dev     #642      +/-   ##
==========================================
+ Coverage   84.29%   84.31%   +0.02%     
==========================================
  Files          66       66              
  Lines        6092     6096       +4     
==========================================
+ Hits         5135     5140       +5     
+ Misses        957      956       -1     

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[FuzzyGrim]

Thank you for addressing that issue!

The providers/manual.py is for manually created entries (https://yamtrack.fuzzygrim.com/create), the file you should change is providers/tmdb.py. Also instead of creating services.MediaNotFoundError I would prefer to trigger services.ProviderAPIError as it's already handling other cases of media not found.

[daften]

I've rebased my changes on top of dev and I've made the changes as requested, not using a new Error, but the existing Error and putting it in tmdb.py! Let me know how this looks to you! :)

[FuzzyGrim]

Thanks!