If the size is the same it's basically just a window movement. That's
nothing we need to roundtrip to the client, but can adjust the geometry
change directly.
The quick tiling test is adjusted to test this together with
sendToScreen. Each window is also sent to the next screen to verify the
state doesn't change and geometry is updated.
Note: the flag for quick maximization seems to get lost in this setup.
Very basic: all screens have same size and are ordered from left to
right. It's mostly meant to allow easy test cases with multi-screen.
The quick tiling test demonstrates how it's used.
This is needed to properly restore to a valid geometry after quick
maximizing. Note: this is not yet perfect, actually it should be done
after initial placing, which means we do need a manage method like
Client.
The autotest for quick tiling is extended to cover maximize changes
and cover this case.
Base test verifies the quick tile positions. No maximization or direct
state changes tested yet.
Required to have Toplevel and AbstractClient exported. Otherwise we
cannot use the SignalSpy.
