Add missing rundep and change source for screenkey

Summary:
The github repository is archieved by the owner.
The project has been moved to gitlab and the developers are working on it to support python3.

Package changes:

• Switch to source to gitlab
• Add missing rundep.
• Add homepage.
• Fix license.

Test Plan: Run screenkey and check if every key is displayed on screen as expected.

Reviewers: Triage Team, JoshStrobl

Reviewed By: Triage Team, JoshStrobl

Subscribers: JoshStrobl

Differential Revision: https://dev.getsol.us/D8832