The hash code implementation here is exhaustive when it doesn't need to
be. Slimming this down to a much more reasonable set of things for perf
reasons.
- All the other descriptors are already `IEquatable` this should be as well.
- Moved the required attribute descriptor comparer from Legacy => Language. It wasn't in the Legacy folder to begin with so this made sense given that it's already internal.
#1495
Created internal + public versions of
- BlockKind
- SpanKind
- AcceptedCharacters
That way these types are only exposed through the VS apis and not
through the runtime API surface.
Also deleted RazorEditorParser. Yep. It's going to take significant work
to just port it to the language services assembly. Let's reevaluate this
when we get closer to the next foundational update.
Ryan Nowak
N. Taylor Mullen