Revert ISB services

Expands #47903 to other calls to GetProxyAsync.

* Put generated files to disk:
- Add new command line param 'GeneratedFilesOut'
- Route new param through tasks with defaults
- Write out generated files when requested to do so
- Rationalize post generation to avoid uncesseary work
- Add Tests for targets and emit
- Add test to track the fact that we can overwrite files on windows in SxS cases

* Use MessagePack for ISB serialization

* DocumentHighlighting service

* Renamer, EncapsulateField, TupleToStruct services

* SymbolFinder and FindUsages services

* NavigateToSearch service

* FindUsages, References fixes

* AddImport service

* SymbolSearchUpdate service

* ExtensionMethodImportCompletion service

* DependentTypeFinder service

* GlobalNotificationDelivery service

* CodeLensReferences service

* Remove CodeAnalysis service

* Remove unused code

* Fix warnings.

* Remove unused

* Error reporting and logging

* Update StreamJsonRpc to 2.6.86-alpha

* Improve callback error handling.

* Update Watson reporting

* PR feedback

* Fix tests

* Fixes

* Remove unused field

* Rename shutdown service

* Switch diagnostic serialization from ObjectReader/Writer serializer to MessagePack

* Fix diagnostic reporting issue in ASP.NET apps

I passed the span to navigate to along to the service, and then never
used it. Oops.

This factory service was only being used to ensure there's a singleton
across all workspaces, but that can be just as easily done by exporting
it directly.

If the file is already open, then this was causing us to trigger a
reload prompt which we don't want.

1. Make the error list build and live diagnostic de-duping cancellable: This ensures that repeated builds have fast error list refresh - currently, error list refresh for later builds will wait for all de-duping to complete for prior builds, just to throw away the computed results and re-refresh the error list.
2. Link error list refresh operations to workspace's disposal token
3. Eagerly initialize the saved project diagnostics from persistent storage after solution load to improve the error list refresh perf for the first build