Extend the upcoming alarm notification to two hours or provide an option to choose

[pudup]

Checklist

• [x] I made sure that there are no existing issues - open or closed - to which I could contribute my information.
• [x] I have read the FAQ and my problem isn't listed.
• [x] I have taken the time to fill in all the required details. I understand that the feature request will be dismissed otherwise.
• [x] This issue contains only one feature request.
• [x] I have read and understood the contribution guidelines.

Is your feature request related to a problem? Please describe. Currently the upcoming alarm notification only appears 5 minutes (maybe 10?) before the alarm fires. It is almost useless.

Describe the solution you'd like Either have it be consistent with other clock apps or have an option to choose the notification period within settings.

Additional context Most Clock apps have this notification appear 1 to 2 hours before the alarm goes off. This is the case with AOSP clock and Google clock afaik.