feat(mobile): Add haptic feedback to asset grid

[l0nax]

Add haptic feedback when jumping from one month to another in the asset grid view.
The feedback is similar to the one implemented in the Google Photos app.

Closes #5342

[martyfuhry]

It looks like the added code will run inside of a function which is responsible for building a widget component. I would instead, attach a listener to a relevant notifier and move this functionality inside of the listener.

For example, a ScrollView will have a ScrollController which notifies listeners whenever it scrolls. For this functionality, I would use the ItemPositionsListener:

void initState() {
  ...
  _itemPositionsListener.itemPositions.addListener(_addHapticsWhenChangingMonth);
}

...

void _addHapticsWhenChangingMonth() {
  // Put the code here
}