Revamp mapcanvas gesture handlers & fix propagation issues

[tomasMizera]

This PR is a complete rewrite of MapCanvas gesture handlers.
Due to multiple issues in Qt (like QTBUG-108689, QTBUG-108821 and more..), TapHandlers, DragHandlers and PinchHandlers were a pain to use and maintain.

• they were fighting who should get an exclusive grab (often resulting in no one and frozen UI)
• taps were propagated to parent scopes even though they should not

The new implementation is minimal and contains only PinchArea with nested MouseArea. Drags and double-clicks are implemented on our own now.

Important: we no longer support tap&drag gesture to zoom in/out the map.
If needed, it will not be hard to add it to the current implementation though

There are still some bits and pieces needed to get rid of the propagation issues (will be a part of this PR):

• replace TapHandlers with MouseAreas everywhere (@iiLubos)
• get rid of the remaining code used as a workaround for the mentioned issues

We need quite a massive testing to make sure the map gestures work properly 😏

Fixes #2549
Fixes #2683
Fixes #2684
Fixes #2617

[tomasMizera]

Not ready for testing yet

[PeterPetrik]

LGTM