Update mame to 0.207
You can find the release notes here.
- Fixed the "plugin directory not found" error.
Test Plan: Played Fire One. Plugins are listed. Changed a bunch of preferences, including UI language.
Reviewers: Triage Team, JoshStrobl
Reviewed By: Triage Team, JoshStrobl
Differential Revision: https://dev.getsol.us/D5582