feat: Add `proxy.rejectAnnouncement`; Update `proxy.addProxy` and `proxy.removeProxy` (#237)

* Tests not working

* Tests working

* small update'

* bug: Update `addProxy` and `removeProxy`

* Add rejectProxy`

* Update exports

* Apply suggestions from code review

Co-authored-by: joe petrowski <[email protected]>

* Run yarn docs

Co-authored-by: joe petrowski <[email protected]>