Move the API into it's own package

[OmgImAlexis]

agenda-rest has just joined the Agenda org so we'll be looking into cleaning up the code to use ava and xo just like the other packages we maintain.

After this we should document which methods we currently serve up as an api so we can migrate them to Koa and integrate it all directly into agenda-rest.

PING: @agenda/maintainers Ref: https://github.com/agenda/agenda-rest/issues/3

[simison]

FYI @joeframbach — any thoughts or advice? :-)

[keyvan-m-sadeghi]

@simison I just transferred to @OmgImAlexis, can no longer even comment there until it's moved.

[OmgImAlexis]

It's moved. https://github.com/agenda/agenda-rest