Breaks the internal GTD infrastructure into seperate symbols for
determining the navigable symbol at the caret position and performing
the navigation.

Handle navigation to a doc ID without a corresponding doc

update roslyn version

Fix crash in nuget code when nuget.config file is broken.

report more data on crash due to dispose

Fix crash with fsharp project references

this is port of https://github.com/dotnet/roslyn/pull/20968 to dev15.3.x

If you had a F# project opened with the new project system, it'd supply
an output directory which other projects (like C#) could reference.
If you had a C# project that referenced the F# project, any attempt
to get the C# compilation would crash because we can't actually produce
F# compilations. The fix is simple: don't convert from metadata
references.

If we're going to require it, let's at least crash with a useful
exception instead of a null ref.

Other components should be able to access this too, especially since
the workspace itself isn't always there.

Bump the version to 2.3.2

Handle serializing unresolved analyzer references

Add a workaround for P2P references with reference assemblies

Disable NETCore version check

Works around https://github.com/dotnet/roslyn/issues/20945