power: Ditch "Automatic Suspend" dialog
Move the automatic suspend options to the Power panel itself. This is a rebase of !1161 (cabf5b09)
This change contains some modifications from that commit linked above:
- Add missing mnemonics
- Change some strings and separate suspend on AC settings from suspend on battery settings, like in latest mockups[1]
Closes #2796
[1] Teams/Design/settings-mockups@1bb482ed
/cc @BrainBlasted Are you fine with this?
Edited by Automeris naranja