* enable logAnalyzerExecutionTime on IDE so that we can start track analyzer perf

* removed unnecessary ICodeAnalysisDiagnosticAnalyzerExecutor interface.

it was added when OOP is first introduced to make sure VS.Next dll won't get loaded to VS process if OOP is not enabled.

when it is enabled by default, rather than removing the interface, implementation just moved down to feature layer to reduce code churn.

now, I am properly removing unnecessary abstraction.

* take Executor out of test MEF composition

* added IRemoteDiagnosticAnalyzerService interface

* made initial version working.

* added tests

* add tracking for inproc only analyzers

* pass in diagnostic analyzer service

* added open file performance tracking as well.

* added PII test

* dont hash analyzerId when it is reported by internal user

* added link to LOF wiki

* made blame to track open files as well.

* forgot to add return in if statement

* reduce threshold to 100ms

decide to start from lower threshold and then iterate rather than start from higher threshold

* added a way to log real time perf data in local machine with explicit option which can be used to train formula later

* addressed ivan's feedbacks

* renamed to ExpensiveAnalyzerInfo

* addressed PR feedbacks

* more renames

* addressed PR feedbacks.

renamed as much as I can find.

* listener can be null in unit test

* addressed PR feedbacks

Return FormattableString for BoundTupleExpression.Display/BoundStackAllocArrayCreation.Display and allow FormattableString in DiagnosticInfo.Arguments.

Updating nuget prerelease versions

Check generic construction diagnostics for stackalloc to span conversions

Enable building targeting arm64 platform

Move more test projects to net461

* Fixed cases where 1:1 mapping between Roslyn and editor text buffer/snapshot are broken.

First case was where the code reused same Roslyn text snapshot to 2 different editor snapshots.
that can cause getting editor snapshot from roslyn snapshot to fail.

Second case was where same editor snapshot can give 2 different roslyn text snapshot breaking
invariant.

didn't do much cleanup except fixing those above two.

* null check. weakReference can be null.

* make sure weakReference always exist

* fixed test failures

* addressed PR feedbacks

* updated comment

Refer directly to static data when ReadOnlySpan wraps arrays of bytes.

Skip CSharpBuild.BuildWithCommandLine while failures are investigated.

Add missing resource string to VB for Interpolated String feature.

Merge pull request #23587 from MaStr11/AddParenthesisAroundConditionalExpressionInInterpolatedStringCodeFixProvider

Add parentheses around conditional expression in interpolated string code fix provider

Fix typo in Microsoft.NETCore.Compilers props file

Multitarget our msbuild task

Add classification API support for VB members, locals and parameters, and tweak C# implementation

The C# compiler is currently required to target net46. This meant the
command line tests needed to target net46 as well as the compiler was
copied into the same directory as the tests. This meant they shared
facades and hence had to have the same target framework (else the
compiler would fail with binding redirects).

This changes the compiler to be copied to a sub-directory below that of
the command line tests. Hence they no longer share facades and can
target different frameworks.

Enable integration tests

* Reenable embedded PDBs on Jenkins

* Update Settings.props

* updated matrix for unreachable code case

* more unreachable tests

* updated comments

* add support for local function