This PR adds support for a new custom menu system on the Fossil Hybrid HR, developed by @dakhnod. For regular users this PR will change nothing, apart from also giving an extra option to light up the display when receiving new notifications.
For more advanced users, there's the [Fossil HR Menu Companion app](https://github.com/dakhnod/Fossil-HR-Menu-Companion) that's needed to enable and configure the new menu system. Just disable one or more of the physical buttons in Gadgetbridge and configure them instead in the companion app to get started.
Co-authored-by: Daniel Dakhno <dakhnod@gmail.com>
Co-authored-by: Arjan Schrijver <a_gadgetbridge@anymore.nl>
Reviewed-on: https://codeberg.org/Freeyourgadget/Gadgetbridge/pulls/2616
