Added menu button to show a notification of the current pass for quick access

[daTom24]

Added menu button to show a notification of the current pass for quick access
video: https://imgur.com/Ie456rB

[simontb]

This looks cool! Thanks for the PR. I did not have a look at the code though. Does an issue exist where this feature is proposed/discussed? If yes, please link it in this PR.

I never saw something like this. Do you have any references for this kind of UX? I'd say it's quite unusual to trigger a notification manually. But I also don't know, if such a feature is needed overall and if yes whether the notification should be shown automatically.

Regarding automatic notifications: IIRC Apple Wallet shows a notification when you're close to a venue and have a valid pass. But this is just something that came to my mind right now. Not necessarily related to this PR.

[ligi]

Thanks so much for the PR. But I agree with @simontb that I think this pattern is not very common. So I am a bit hesitant with merging. What I could imagine: A setting in each pass with "notification before" and then "always" could be one setting that basically is this feature you want. What do you think?