Add HTTP verb wrappers

[oubiwann]

As done in lcmap-client-clj and neocons libraries, e.g.:

• https://github.com/michaelklishin/neocons/blob/master/src/clojure/clojurewerkz/neocons/rest.clj#L58

This can just go in meson.http.

Mesos uses:

• [x] GET
• [x] POST
• [x] PUT
• [x] DELETE