Timer list on UI

[KasparMetsa]

This package by Khazdul is a great example of how to make timer list look and feel nice: MumeSpellTimers.mpackage https://github.com/Khazdul/MUME

It calculates an average time of last X spells, that's how it knows how long the spells and effects last.
Maybe something like an optional ⁨⁨panel⁩⁩ for MMapper.