Allow to define documentation

[jeluard]

It should be possible to provide a documentation for various defwebcomponent sections. This information should be available at runtime per type so that it can be used to generate some visual representation of it.

[jeluard]

Potential syntax:

(defn method1
  "This method does.."
  [el arg]
  nil)

(defwebcomponent my-documented-component
  "This component blablah.."
  [param]
  :properties {:property1 {:default 1 :events? false :doc "this does blah"}}
  :methods {:method1 method1})

[jeluard]

Out of scope.