Roslyn Shim - First Phase (#6498)

* Trying to use shim

* Removed contenttypelangservice, it's in externalaccess now

* Added namespace

* Added diagnosticanalyzerservice shim

* Using Brace matching from external access

* Using VSWorkspace extensions

* More apis

* Using shim for IEditorFormattingService

* More apis

* More shims

* Updating shim

* Update VisualFSharp.UnitTests.fsproj

* Fixed api call

* Fix debugging

* Fixed unit test fsproj, find all refs shimmed

* Change analyserservice

* Fixed build

* Updating shim with FSharp prefixes

* Fixing glyph helpers

* Fixing typemap

* Update fsi.fsproj

* Update Versions.props

* Update RoslynPackageVersion.txt

* Update prim-lexing.fs

* Update prim-lexing.fs

* Update fsi.fsproj

* Update fsi.fsproj

* Update VisualFSharp.UnitTests.fsproj

* Update CompletionProvider.fs

* Fixed package

Author: TIHan

RoslynPackageVersion.txt

@@ -1 +1 @@
-3.0.0-beta4-19170-01
+3.1.0-beta3-19222-02

eng/Versions.props

@@ -71,6 +71,7 @@
       https://api.nuget.org/v3/index.json;
       https://dotnet.myget.org/F/roslyn/api/v3/index.json;
       https://dotnet.myget.org/F/symreader-converter/api/v3/index.json;
+      https://dotnet.myget.org/F/interactive-window/api/v3/index.json;
       https://myget.org/F/vs-devcore/api/v3/index.json;
       https://myget.org/F/vs-editor/api/v3/index.json;
       https://vside.myget.org/F/vssdk/api/v3/index.json;