GitLab PR Summarizer using JIRA

Summarise GitLab Merge Requests using GPT-4o and update their descriptions with Atlassian Jira context. This requires gitlab token to access the commits, Atlassian token to fetch jira description for the links attached in the commits, and openAI token for the summarisation. Fill all this information to be able to use this feature. A floating button will appear in bottom right corner whenever a gitlab merge request is opened clicking on it creates a summary from the commits and attached JIRA contexts and appends to the gitlab merge request description.