build v2 tags for release-candidate versions

never publish pointer payloads on message bus (h44z#411)

add simple webhook feature for peer, interface and user events (h44z#398

)

automatic API access for default admin (h44z#357)

fix self provisioning feature (h44z#272)

allow LDAP users (and linked peers) to be automatically re-enabled (h…

…44z#345)

chore: publish more docker version tags, migrate to semver

fix .gitignore

chore: update dependencies

add metric endpoint to public API (h44z#72, h44z#80)