Add update support to the echo translation engine

[pmachapman]

Fixes #730

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This change is 

[codecov-commenter]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 66.34%. Comparing base (01802f0) to head (fdfeda0).

Additional details and impacted files

@@           Coverage Diff           @@
##             main     #733   +/-   ##
=======================================
  Coverage   66.34%   66.34%           
=======================================
  Files         368      368           
  Lines       19652    19652           
  Branches     2510     2510           
=======================================
  Hits        13039    13039           
  Misses       5699     5699           
  Partials      914      914           

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[Enkidu93]

Thanks for doing this!

@Enkidu93 reviewed 1 of 1 files at r1, all commit messages.
Reviewable status: complete! all files reviewed, all discussions resolved (waiting on @pmachapman)

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src/Echo/src/EchoEngine/TranslationEngineServiceV1.cs line 48 at r1 (raw file):

        if (request.SourceLanguage != request.TargetLanguage)
        {
            var status = new Status(StatusCode.InvalidArgument, "Source and target languages must be the same");

I was thinking that we might need to cover the case where the client only changes the source or target lang, but it looks like that's covered implicitly in the EngineService.

[ddaspit]

@ddaspit reviewed 1 of 1 files at r1, all commit messages.
Reviewable status: complete! all files reviewed, all discussions resolved (waiting on @pmachapman)