Parse Lisp S-expressions

[ink-pot-monkey]

Another thanks for this library from me :)

This is a general parser for lisp files in Nix with 2 specific use cases/examples being info.rkt files and the racket package catalog.

This is my first ever experimentation with parsers and parser combinations so hopefully its not too rough around the edges.

Also credits to @happysalada for putting me on to this and helping out with the escaped \" characters inside of quotations