Support for /webhook endpoints with OAuth2 tokens

[ibuchanan]

The issue has been resolved and the new webhooks are available under 3LO:

OAuth 2.0 (3LO) Webhooks announcement

Hi developer community, We are excited to announce that 3LO apps (OAuth 2.0) can now register webhooks using Dynamic Webhooks API ([ACJIRA-1632] - Ecosystem Jira). The Dynamic Webhooks API for 3LO apps will work exactly as it currently works for Connect apps. The 3LO apps need to declare a new OAuth scope: manage:jira-webhook to use this API. For now, only a subset of events is supported: jira:issue_created jira:issue_updated jira:issue_deleted comment_created comment_updated comment_deleted …