Add support for InlayHint.TextEdits

[JoeRobich]

This cannot merge until we take a new release of O# that includes OmniSharp/omnisharp-roslyn#2385.

This PR adds support for InlayHint.TextEdits which allows the hint to be double clicked in VS Code. The TextEdits are then applied to the file removing the need for that particular hint.

Screen.Recording.2022-04-21.at.8.42.47.AM.mov

[333fred]

What are the errors in the example gif? Import errors? If so, is there any way we can have the needed imports added to the text edits?

[JoeRobich]

What are the errors in the example gif? Import errors? If so, is there any way we can have the needed imports added to the text edits?

In hindsight it was a bad idea to use dotnet/format as an example because the .editorconfig requires the use of var. It isn't import related, although now I wonder if I could get that to fail. Worst case the user would have to invoke the 'add import' code fix, but it would be nice for Roslyn to provide all the necessary edits.

[JoeRobich]

@333fred Opened dotnet/roslyn#61438 to track adding imports when necessary.