new: alpha beta experimental modifiers

[chadhietala]

This adds badges to entities that are marked with stabilitity modifiers. I'm open to
suggestions on better ways of rendering this information.

[milesj]

@chadhietala I like the idea but I feel like the badges should be alongside the name. So "baz " or "Foo ". Can probably be done with a new CommentBadges or something component.

[chadhietala]

@milesj I think that makes sense. Locally I have members rendering like that but one of the things I'm not sure about is in reflections that can have multiple signatures (functions/methods). Technically each signature could have a different modifier on it. Do you think it would be ok to include the badges in body or do you think it would be better to have the heading change when clicking of different signatures?

The UI in question:

Here's a preview of the members:

[milesj]

@chadhietala Properties look good, but yeah signatures is weird. I suppose putting them in the body is fine...

[chadhietala]

Ok I think this is ready. Heres what I ended up with.

[milesj]

Awesome stuff!