Port clojure.pprint

[jeaye]

This one would help my day to day work, since I'm often rendering EDN versions of jank's AST and yearning for some nice formatting (at least until we can tap into Portal 😁). Check out clojure.pprint and the various other files it brings in. Try to break it into smaller pieces. Any part that's pure Clojure should just work with jank; if you run into something that's not yet implemented, call it out and we can prioritize that. Any parts that are doing Java interop need to go into a clojure.pprint-native module that's using a C++ file. This will allow you to reach into the jank world.

For now, just use the C API, rather than the C++ API. This is more limiting, but it's much lighter to JIT compile.

[stmonty]

I'm on it!