Add more scopes

[claytonrcarter]

Hi, I had to open this here because your branch only exists in your repo, not on the main pulsar repo, which I guess makes sense. I did not add tests for these, but I did follow the sweet instructions you posted to make these edits and watch the highlights update live. 🪄

I think the commits speak for themselves, but the gist is:

• fix interface
• fix abstract
• support $foo->bar, Foo::bar and Foo::$bar
• support trait usage, ie use Foo in a class, not as a namespace import
• support emums
• support missing compound operators

[savetheclocktower]

OK, I updated #852 with all this feedback, including a few other things (like scoping case in enums differently from case in switch statements). Let me know if any of this wasn't addressed in one way or another.