Allow accessing counters from tray icon and/or focus session.

[tegridyfarmer]

Problem Statement

Currently in focus mode you can not update your counter(s).

❔ Possible Solution

Allowing changing the counter(s) via the tray icon and/or in focus mode.

⤴️ Describe alternatives you've considered

Exiting the focus session to be able to change my counter, but this is not desirable.
And using a seperate counting application like: https://flathub.org/apps/ca.vlacroix.Tally. But I like seeing the history from previous days, which such apps often do not provide.

➕ Additional context

Related issues created about tray:
#3854
#3757
#3769
#3872

[github-actions]

Thank you very much for opening up this issue! I am currently a bit overwhelmed by the many requests that arrive each week, so please forgive me, if I fail to respond personally. I am still very likely to at least skim read your request and I'll probably try to fix all (real) bugs if possible and I will likely review every single PR being made (please, give me a heads up if you intent to do so) and I will try to work on popular requests (please upvote via thumbs up on the original issue) whenever possible, but trying to respond to every single issue over the last years has been kind of draining and I need to adjust my approach for this project to remain fun for me and to make any progress with actually coding new stuff. Thanks for your understanding!