How to create my own service and add it into gitlab? Services like jira, jenkins are present under integrations in Gitlab. How can I create a service to add it under gitlab Integrations and make it useful for every one's use?
This is called "Project services", and it has a "contribution" section.
It is based on gitlab-org/gitlab-foss, folder app/models/project_services, where you can add your own service.