The new Formatter is used in debugger display, to resolve#2264
The next iteration (assuming we like this) will be to replat our testing
baseline infrastructure on top of this, and then start sharing that with
Blazor - related to #2265.
I found when implementing debugger display that I was duplicating a lot
of details between testing and this.
I also want to convert the Blazor tests to use shared infrastructure.
Right now the Blazor tests use a modified version of the Razor
infrastructure that has different features.
- As part of this work I also added `Microsoft.VisualStudio.Mac.LanguageServices.Razor` to be the Visual Studio for Mac specific Razor code.
- Added MSBuild infrastructure to automate creation of MonoDevelop addins (MPacks). This work enables us to not have a dependency on a specific version of monodevelop and does not require us to have tool-prerequisites on the box. Every build outputs the mpacks into the artifacts/build directory.
- Built in build-level metadata pieces to workaround how addins are typically developed. They are usually authored C# first and then config files are generated after the fact; with this changeset we auto-generate the addin.info and its corresponding assembly attributes. Both of these take information directly from the build system.
#1696
This uses a feature of KoreBuild which will select PackageReference
versions based on a lineup file. This helps unify versions between repos
and helps us ensure we are consistent across multiple components.