Why do we need this ?

As a GitHub App developer

I need to:
Add a listener for room messages and extend GitHub Code links like - https://github.com/RocketChat/Apps.Github22/blob/main/github/definitions/githubIssueData.ts#L4-L9
So That:
Users can see the linked code segment ins the sent message.

Acceptance Criteria

• Add listener for room messages which contain GitHub Code Segment link
• Extend the message to contain the linked code.

Further Comments / References

• Documentation
• Inspiration :