Add support for deps.edn

[andrew]

Clojure has another manifest format file called deps.edn, details over here: https://clojure.org/reference/deps_and_cli#_deps_edn

The file format is Extensible Data Notation, and there looks like there's a ruby library we can use to read it: https://github.com/relevance/edn-ruby

Basic example:

{:deps
 {hiccup {:mvn/version "1.0.5"}
garden {:mvn/version "1.3.3"}}}