Since the default tag helper provider is used by MVC then MVC should
include it. Now that Blazor is in the mix we shouldn't include it for
all configurations.
Step 1: Add HostProject
This is a somewhat complex addition to the ProjectSnapshotManager. Now
that we accept updates from the underlying IDE project system we need to
coordinate those with the Workspace.
This means that ProjectSnapshot itself now also has a version concept.
Step 2: Introduce a new project system based on CPS
We use project capabilities defined by the Razor SDK to determine
whether to rely on MSBuild evaluation to detect the configuration or
whether to fallback to assembly-based detection.
Step 3: Flow RazorConfiguration everywhere
We use now expose the RazorConfiguration to the language service and
editor. This means that we no longer need to detect the project's
configuration asynchronously, it happens much faster now.
- Instead of using Razor/Mvc TemplateEngine use `RazorProjectEngine`. This involved changing several locations (each of which used `RazorTemplateEngine` in an entirely different way) to use the RazorProjectEngine's two Process methods.
- Changed an unused public API `VisualStudioRazorParser.TemplateEngine` to `VisualStudioRazorParser.RazorProjectEngine`.
- Ported the remainder of `RazorEngineBuilder`'s extension methods over to `RazorProjectEngineBuilder`. These were used in tests and our `RazorGenerate` tool.
- Added a few test helper methods/classes to enable simple testing of the `RazorProjectEngine`.
- Resolved several test hacks that were working around little discrepancies each of the `RazorTemplateEngine` APIs.
- Changed the template engine factory service to be a project engine factory service.
Ryan Nowak
N. Taylor Mullen
Nate McMaster