Object Detection using TorchSharp

[michaelgsharp]

Adds in Object Detection using TorchSharp with an AutoFormer model.

Main files to look at are the Object Detection Trainer, Utility methods, and the refactors to TextClassification and Sentence Similarity.

We also pulled in local/internal copies of System.Range/Index to make the future model conversion process much easier.

[ericstj]

Small comments about index/range

[codecov]

Codecov Report

Merging #6605 (792407d) into main (d239fda) will increase coverage by 0.13%.
The diff coverage is 86.51%.

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #6605      +/-   ##
==========================================
+ Coverage   68.39%   68.52%   +0.13%     
==========================================
  Files        1174     1200      +26     
  Lines      248047   250288    +2241     
  Branches    25909    26093     +184     
==========================================
+ Hits       169647   171521    +1874     
- Misses      71626    71932     +306     
- Partials     6774     6835      +61     

Flag	Coverage Δ
Debug	68.52% <86.51%> (+0.13%)	⬆️
production	63.00% <87.36%> (+0.22%)	⬆️
test	88.83% <63.95%> (-0.06%)	⬇️

Flags with carried forward coverage won't be shown. Click here to find out more.

Impacted Files	Coverage Δ
...icrosoft.ML.TorchSharp/NasBert/Models/BaseModel.cs	66.66% <ø> (ø)
...osoft.ML.TorchSharp/NasBert/Models/NasBertModel.cs	87.75% <ø> (ø)
...Microsoft.ML.TorchSharp/NasBert/Optimizers/Adam.cs	100.00% <ø> (ø)
src/Microsoft.ML.TorchSharp/Utils/HashHelpers.cs	0.00% <0.00%> (ø)
test/Microsoft.ML.Tests/TextClassificationTests.cs	86.01% <0.00%> (-8.75%)	⬇️
src/Microsoft.ML.TorchSharp/Utils/Index.cs	29.41% <29.41%> (ø)
src/Microsoft.ML.TorchSharp/Utils/Range.cs	31.57% <31.57%> (ø)
src/Microsoft.ML.TorchSharp/TorchSharpCatalog.cs	77.77% <71.42%> (-22.23%)	⬇️
src/Microsoft.ML.TorchSharp/Utils/ImageUtils.cs	83.56% <83.56%> (ø)
...c/Microsoft.ML.TorchSharp/TorchSharpBaseTrainer.cs	83.75% <83.75%> (ø)
... and 24 more

... and 34 files with indirect coverage changes

[ericstj]

None of my feedback is blocking, it's all just cleanup. I'd like a review from other area experts before merging though.

[luisquintanilla]

LGTM. Thanks everyone for the work involved in making this happen.