Add Word Alignment engine:

[johnml1135]

• Add HTTP API
• Add Grpc
• Add Echo
• Add Serval services
• Add machine level implementation
• Add tests

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This change is 

[codecov-commenter]

Codecov Report

Attention: Patch coverage is 52.78150% with 1409 lines in your changes missing coverage. Please review.

Project coverage is 61.08%. Comparing base (5dd100d) to head (23c3e22).
Report is 2 commits behind head on main.

Files with missing lines	Patch %	Lines
...red/Services/ServalWordAlignmentEngineServiceV1.cs	0.00%	152 Missing ⚠️
...achine.Shared/Services/StatisticalEngineService.cs	0.00%	141 Missing ⚠️
....Shared/Configuration/IMachineBuilderExtensions.cs	0.00%	136 Missing ⚠️
...ServalWordAlignmentPlatformOutboxMessageHandler.cs	0.00%	97 Missing ⚠️
...red/Services/ServalWordAlignmentPlatformService.cs	0.00%	94 Missing ⚠️
...achine.Shared/Services/WordAlignmentEngineState.cs	0.00%	61 Missing ⚠️
...Shared/Services/WordAlignmentPreprocessBuildJob.cs	0.00%	61 Missing ⚠️
...src/Serval.WordAlignment/Services/EngineService.cs	88.06%	51 Missing and 7 partials ⚠️
....Shared/Services/StatisticalPostprocessBuildJob.cs	0.00%	57 Missing ⚠️
...Shared/Services/WordAlignmentEngineStateService.cs	0.00%	47 Missing ⚠️
... and 59 more

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #506      +/-   ##
==========================================
- Coverage   62.97%   61.08%   -1.90%     
==========================================
  Files         279      343      +64     
  Lines       13984    18172    +4188     
  Branches     1814     2365     +551     
==========================================
+ Hits         8807    11100    +2293     
- Misses       4551     6254    +1703     
- Partials      626      818     +192     

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[johnml1135]

@ddaspit - this is finally ready for review.