applets/battery: add middle click and scroll actions
Ready to be merged after 6.0 is branched
- Middle-click to manually block sleep and screen locking
- Scroll to change power profile
Both includes showing a newly introduced OSD to confirm the change if the applet is not expanded.
"Screencast": https://i.imgur.com/pBueT50.mp4
See also: !3531 (closed)
Needs !3611 (merged) to work properly.
Edited by Natalie Clarius