Add Time settings

[realroot2185]

Right now there is no setting for the date.
And incrementing the time over 24 hours will go to the next day.

I wonder if it is possible to set the current time instead of the unix epoch (1970) when flashing it.
Infinitime should have that now.

[lulf]

Personally I rely on just using the current time service, which works nicely since I rarely let it run out of battery. But I'm fine with adding a menu entry for adjusting, thanks for adding!

[realroot2185]

Now it would be nice to have an alarm.
Where should I store the var?
I guess it should be a PrimitiveDateTime.

Edit: just holding hours and minute I think.

Trying in firmware/src/clock.rs:

pub struct Clock {
    time: Mutex<ThreadModeRawMutex, RefCell<time::PrimitiveDateTime>>,
    alarm: (u8, u8),
}

[lulf]

Now it would be nice to have an alarm. Where should I store the var? I guess it should be a PrimitiveDateTime.

Edit: just holding hours and minute I think.

Trying in firmware/src/clock.rs:

pub struct Clock {
    time: Mutex<ThreadModeRawMutex, RefCell<time::PrimitiveDateTime>>,
    alarm: (u8, u8),
}

Alarms should preferably be stored to flash I guess, but for now in memory is fine. An alternative to storing it on the clock would be to spawn a task whenever an alarm is set, and the task would wait until the deadline before signalling that it should be raised.

[realroot2185]

How does a task signal that a WatchState I believe should be raised?