Migrate PreTranslate.Refs and WordAlignmentRefs to TargetRefs

[pmachapman]

Fixes #1017

Adding the WordAlignment migrator is probably overkill, as I am not aware of any word alignment objects on live, QA, or internal QA, but it is useful for completeness I guess.

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This change is 

[codecov-commenter]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 72.83%. Comparing base (231bcba) to head (5049591).

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #1056      +/-   ##
==========================================
+ Coverage   72.79%   72.83%   +0.03%     
==========================================
  Files         390      391       +1     
  Lines       21715    21741      +26     
  Branches     2824     2824              
==========================================
+ Hits        15808    15834      +26     
  Misses       4785     4785              
  Partials     1122     1122              

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[Enkidu93]

@Enkidu93 reviewed 19 files and all commit messages, and made 2 comments.
Reviewable status: all files reviewed, 1 unresolved discussion (waiting on pmachapman).

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src/Serval/src/Serval.WordAlignment/Configuration/MongoMigrations.cs line 13 at r1 (raw file):

                    "$set",
                    new BsonDocument(
                        "targetRefs",

I'm realizing that with the update to use the USFM versification conversion feature, we no longer use SourceRefs - is that correct? I think we should keep them for now, but this just brought that to my attention. I still think there's a chance we may want to tweak how that feature works in which case we may want the source refs.

[pmachapman]

I'm realizing that with the update to use the USFM versification conversion feature, we no longer use SourceRefs - is that correct? I think we should keep them for now, but this just brought that to my attention. I still think there's a chance we may want to tweak how that feature works in which case we may want the source refs.

@Enkidu93 Hmm looks that way. Could be prudent to create an issue to deprecate or remove them in future?