Add syntax classification for nullable directives

Increase available span for 'Convert to interpolated string' refactoring

Format documents in Roslyn.sln

[dotnet-format] Decreased the logged severity of workspace diagnostic warnings

* Remove RuntimeIdentifier specification

* Arcade directory layout

Add support to Replace and Insert SyntaxEditor APIs to allow tracking…

* Move package reference to RoslynTools.ModifyVsixManifest from Tools to VSIX project

RoslynTools.ModifyVsixManifest is used by a build task that executes on Build and thus must be restored when the project is restored, not when the CI tools are restored.

* Move RoslynTools.BuildTasks package reference

* Fix publishing configuration

Only support refactoring without a selection to prevent possible confusing when selecting part of to be interpolated string

Add MicrosoftDotNetIBCMergeVersion back

Fix to unused value assignment analyzer for #31583

Fix procdump support

* make sure we don't load assembly too early for vsix installed analyzer dlls.

we had special code around vsix installed analyzers dlls to make sure it doesn't get loaded until it is actually used. that got broken when I made this fix - https://github.com/dotnet/roslyn/pull/31438

this puts that special behavior back to make RPS happy.

* added a test that indirectly check the expected behavior.

directly testing whether assembly got loaded or not is not easy to test so using indirect way

* update comments

* addressed feedback on cancellationtoken

* added more comment

Address feedback and a more complex unit test with multiple Replace and Remove operations on new and old nodes in varying order.

Ensure we update additional documents when they change on disk

Previous PR accidentally removed this version.

Update dotnet-format to format files in parallel

Remove unnecessary asynchronous Formatter operations

Add IWorkspaceProjectContext.Add/RemoveAnalyzerConfigFile stubs

Fix issue where we show the 'ReSharper is suspended' gold bar before ReSharper has finished loading (#31132)

* Fixes 659765

* Respond to feedback

* Fix async and cancellation, add bool for polling

* Respond to feedback

* Remove unneeded bool

Makes two changes:

- Fixes the parsing of useprocdump option in RunTests. This was blocking
our official builds.
- Enables proc dump during normal desktop CI runs. This appears to have
been lost when moving our tests to Azure DevOps

1. Do not offer remove unused local assignment for locals with error type
2. Make sure that this code fix is ordered after Add usings code fix, in case there are more similar unknown cases, by adding the ExtensionOrder attribute

Fixes #31583

Don't warn about deprecated licenseUrl property

Handle null replacement and insertion nodes and also add missing null checks with ArgumentNullException on existing public APIs that assumed non-null inputs.

This doesn't add any implementations, but creates the stub APIs for
the project system to start building against.

Standardize the conditional IOperation verification skip method, and …

* refactor and clean up diagnostic engine code so that it can be re-used stand alone.

code refactored is related to properly set up CompilationWithAnalyzer and compute and return diagnostics

* made default diagnostic analyzer service to share code with VS diagnostic analyzer service on computing diagnostics.

unlike VS diagnostic analyzer, the default one doesn't persist data or calculate diagnostics per a analyzer to improve per analyzer freshes nor compute and maintain per project analyzers and etc.

also, this add ability to calculate semantic diagnostics for script file.

* enable semantic diagnostics for script file for misc workspace.

now, C#/VB script files in misc workspace will get semantic errors as well as syntax errors.

any language such as F# if document is added to misc workspace with SourceCodeKind.Script, they will automatically get semantic errors as well.

this PR doesn't address changes propagations for #load which was never supported for existing C#/VB script support.

* addressed PR feedbacks