Add a fast mode to Counter where more than one is skipped on long press

[ljahn]

Oftentimes I cannot be bothered to hold the + button of the timer down until 30s is reached, because it takes so long. Instead, I just set 30s less and wait around a bit after the timer rings. When setting an alarm, I have the same problem with the minutes. It just takes too long.

This adds a 'fast mode' to the Counter widget that is used in these cases. An application designer can enable this for a widget and is then able to specify how many steps should be skipped on each trigger of the LV_EVENT_LONG_PRESSED_REPEAT event.

This PR enables this with value 5 for Timer, Alarm (minutes only) and SettingDateTime (days and minutes only).

Also includes a small fix for Counter where the ValueChangedHandler was not called if SetValue was used. I don't think there were any bugs caused by this yet, I checked all uses of the function.

[github-actions[bot]]

Build size and comparison to main:

Section	Size	Difference
text	372976B	160B
data	948B	0B
bss	22536B	0B

[ljahn]

The value of 5 I selected for the fast skip might be too high, maybe 3 would be better. I will evaluate this in my daily usage.