BREAKING: expose JSX OGLElements, improve reconciler type-safety

[CodyJasonBennett]

Improves internal reconciler type safety by filling out the reconciler's host config types. Also exposes JSX elements defined by react-ogl as OGLElements. These can now be accessed deterministically from the OGLElements export, and modified with the following:

import { Node, extend } from 'react-ogl'

class CustomElement {}

declare module 'react-ogl' {
  interface OGLElements {
    customElement: Node<CustomElement, typeof CustomElement>
  }
}

extend({ CustomElement })