Add an instrumentation component that can be used to instrument certain statements and expression during lowering.

Move sequence point injection from LocalRewriter to the instrumentation component.
Related to #9819.

Merge remote-tracking branch 'dotnet/future' into features/test-impact

Guarantee that method tokens used in dynamic analysis instrumentation are for definitions

Make sure that the method tokens used to indicate dynamic analysis payloads are for definitions, not references.

Repair dynamic analysis instrumentation for using and fixed statements

Merge master into future

Fix naming in use var codestyle

Change check of test method to looking for Xunit.FactAttribute attribute

Update Microsoft.DiaSymReader.nuspec to rc2-23931 build

Fix culture conditional fact attribute

Correctly implement detection of existing package versions

Correctly implement detection of existing package versions

The previous heuristic didn't work if you had one package whose ID
was a prefix of another package. This fixes that.

Mark two more NuGet packages as dependencies to include in a VSIX

Update versions of DSR and DSR.PortablePdb

for name consistency.

Code style options page UI updates

Do not attempt to move diagnostics with additional locations.

Fixes #10258

Merge master into future

Fixed a bug in error output caching