React to merged MR events from org contributor in Slack channel

React to merged MR events from org contributor in Slack channel

For merged customer contributions to gitlab-org

• Posts a message to Slack with the following details
  • Link to GitLab user that authored the MR
  • Link to associated Org in Salesforce
  • Contribution type from
    • ~feature
    • ~bug
    • documentation
    • ~tooling
  • Link to the MR on GitLab.com

• Notifications will only be posted if the associated organisation can be established

Message format example

> Organization: https://gitlab.my.salesforce.com/org
> Contribution Type: bug
> Contributor: https://gitlab.com/alberts-gitlab
> MR Link: http://gitlab.com/mr_url

Relates to https://gitlab.com/gitlab-com/www-gitlab-com/-/issues/10910