Initial inclusion of minigalaxy

Summary:
Addresses T8567 package request for minigalaxy GOG client.
This commit is the initial package submission.

Signed-off-by: Donald Thackeray <donaldthackeray@gmail.com>

Test Plan: Package was installed and run. Logging in, out, and back in. Install, launch, and uninstall games. Menus explored and settings toggled successfully.

Reviewers: Triage Team, JoshStrobl

Reviewed By: Triage Team, JoshStrobl

Subscribers: Jacalz, V1T4MiN, JoshStrobl

Differential Revision: https://dev.getsol.us/D8363