Feature Request: Change github event hook to use custom RepositoryDispatchEvent for asset recompile

[jspaleta]

Github API gives you the ability to generate a custom github event using a personal token. We can use this workflow to trigger bonsai to run an asset recompile at the end of CI/CD after all asset binaries are uploaded into the tagged github release.

###Straw proposal

1. We create a github custom event using event_type "bonsai_recompile" as part of github actions/travisCI
   ref: https://developer.github.com/v3/repos/#create-a-repository-dispatch-event
2. We change Bonsai logic to look for that event instead of the asset create event.

[jspaleta]

Update on this. The repository_dispatch event can't be used by webhooks at present, it there only to support github actions right now. So this isn't a solution yet.