Clean up compiler logging

The compiler logging support primarily helped with identifying issues
with the underlying protocol. That was an area of problem in the initial
compiler server development and a sensible logging scenario.

Now though the underlying protocol isn't really an issue for the server.
The bigger issue is tracking the underlying state transitions of the
server and the reasons for making such transitions. This PR moves our
logging to match this new reality.

Include information why symbol key resolution has failed to help with debugging.

Merge release/dev16.7 to master

Reduce nested testing level in x86 release E2E tests.

Fixes #37165

Add analyzer action for reporting diagnostics in additional files

Improvement to completion for unimported extension methods

Fix PropertiesInRecursivePattern_PositionalInFirstProperty_AfterComma

Change signature accessibility - add screenreader header for empty column

Enable tests and update features to support new language changes around patterns.

Closes #45564.
Related to #45110.

* Ensure we associate an error with all missing identifiers in the parser.

* Fix test

* REstore original error

Merge release/dev16.7 to master

Fix code analysis messages in command-line parser

Support applying attributes to properties and fields that are created to back primary constructor parameters in records. (#45908)

Closes #44691.

by aggregating overloads, also reduce the number of items returned

Update TestImpact public key in additional IVTs

#3438, use standard Type Conversion Functions when possible

* InteractiveHost for .NET Core

* Merge fix

* Fixes

* Typo

* Workaround for https://github.com/dotnet/interactive-window/issues/156

* Fix

* Update OptProf config

* Fix deployment of rsp files

* Fix signing.

* Clean up unit tests dependencies.

* Remove unnecessary references.

* Fix reset interactive command

* Fix OptProf config

* Add missing project refs

* Fix InteractiveHost deployment

* Process rsp file fully in InteractiveHost process and send back results.

* Fix build from VS.

* Retrieve metadata resolver parameters from InteractiveHost process.

Simplify keeping search paths in-sync between InteractiveHost and InteractiveEvaluator.

* Fixes

* Fixes

* Check for failures to create process in unit tests

* Test

* Pending buffers

* Fix submission project creation

* Logging

* Serialize exceution and process initialization

* Fix reference completion, resolution.

* MetadataReferenceResolver fixes

* Fix failing .NET Core tests

* Target netcoreapp.

* Set DOTNET_ROOT

* Fix NGEN/OptProf

* Avoid loading Microsoft.CodeAnalysis.Scripting

* Fix

* Feedback

* Feedback

* Feedback

* Comment on dependent target

* Disable interpreting of strings as DateTime during deserialization:

* Merge fix

Continue on captured context after switching to the main thread

Add support to detect unnecessary inline SuppressMessageAttribute suppressions