SF-3617 Detect books without content and exclude from drafting option

[RaymondLuong3]

This PR adds logic to determine whether a training book should be selectable as training data. It looks at the target and training source project progress and evaluates whether the specific book has the minimum number of translated verses (3 verse segments).
It is still possible to select training books that have zero overlap in the translated verses, but this is will improve user experience when they accidentally select books that are fully blank. We may want to bump up the minimum number of translated verses to 50% of a book, but that is a different discussion.

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This change is 

[codecov]

Codecov Report

❌ Patch coverage is 94.59459% with 2 lines in your changes missing coverage. Please review.
✅ Project coverage is 81.96%. Comparing base (eda080f) to head (9f15eba).
⚠️ Report is 77 commits behind head on master.
✅ All tests successful. No failed tests found.

Files with missing lines	Patch %	Lines
...neration-steps/draft-generation-steps.component.ts	94.59%	2 Missing ⚠️

Additional details and impacted files

@@           Coverage Diff           @@
##           master    #3660   +/-   ##
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  Coverage   81.95%   81.96%           
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  Files         618      618           
  Lines       38495    38520   +25     
  Branches     6300     6302    +2     
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+ Hits        31549    31571   +22     
- Misses       5972     5977    +5     
+ Partials      974      972    -2     

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[pmachapman]

@pmachapman reviewed 4 files and all commit messages, and made 1 comment.
Reviewable status: complete! all files reviewed, all discussions resolved (waiting on @RaymondLuong3).