Matrix interoperability

As I’m using the matrix.org network I was wondering if someone is working on a GitLab integration with for exampele webhooks and Matrix like it’s used with Slack: https://docs.gitlab.com/ee/project_services/slack.html which can be used with a self-hosted GitLab CE like with Mattermost? I could integrate with a Slack channel and use a Matrix bridge but I would prefer to use Matrix directly, in essence replacing Mattermost with Matrix and Riot.

Apparently GitLab already considers this issue: https://gitlab.com/gitlab-org/gitlab-ce/issues/25634