Similarly for TupleDeconstructionVariableDesignation.
Also found many places to handle both kinds of foreach statements.

This reverts commit 720f5c5e, reversing
changes made to 6a6043c3.

Add CS1572 to the list of fixable diagnostics.  Modify my method of finding the correct node slightly.

Also update the out var syntax node to use the newly introduced
VariableComponent so it can be extended in the future to allow `out *`
or `out var (x, y)` etc without requiring any further changes to the
syntax model.
Fixes #12747, #12664, #12588, #1503

  (e.g. ref local variable declaration)
We introduce a "ref expression" for use in expressions
  (e.g. right-hand-side of a ref variable initialization)
Also improve the diagnostic for local functions.
Fixes #12749, #12580

changes include
make SourceText::GetChecksum and AnalyzerTelemetry contructor public.

added MustRunInProc in IBuiltInAnalyzer and some clean up around serializing Solution/Project/DocumentId and how DocumentState is exposed.

simplified temporary storage service's temporary storage management and added ability to attach to existing temporary storage

solution checksum and serialization service.

added remote host client
- this gives an ability for host (vs) to talk to remote host (service hub)

rename and moving files between feature/workspace layers
- only real change is having ICompilerDiagnosticAnalyzer interface which can either have inproc implementation or out of proc implementation.
- inproc is needed since diagnostics are in feature layer and one who uses feature layer out side of VS host need an implementation.

added RemoteWorkspace
- RemoteWorkspace has host agnostic implementation of roslyn features/services/workspace that will run in remote host

added service hub component and setup project for service hub
- service hub component is basically thin layer that deals with converting data to pass in to RemoteWorkspace

made devdiv insertion tool to ignore servicehub related files

support byte and char array natively in ObjectReader/Writer

added MustRunInProc in IBuiltInAnalyzer and some clean up around serializing Solution/Project/DocumentId and how DocumentState is exposed.

Switch to using TaggedText (from SymbolDisplayPart) for features that want to display classified text.

and export it for both C# and VB. Remove language specific subclasses
that weren't needed.
Also update tests to correctly instantiate the CodeRefactoringProvider
after the change.

for VisualBasic.