Resize animation

[gucio321]

While ridding the bus I got an ides: maybe add a resize animation?

Overview

The idea is a bit difficouls ince neither giu nor imgui has common way to set item's size.
I suggest to create two interfaces: one with Size(X float32) ando another for Size(x, y float32).
Now animation should try to convert given widget to one of the interfaces if it fails, it should panic.

[gucio321]

at this point I need to consider wheter the animation should just resize widget or make it symetrical as well.
I'd opt the second solution.
This needs a bit of tricky magic to play around with cursor but it should be possible.

[gucio321]

TrickCursor* was added, however operating drawing cursor is not perect because there is a problem with imgui.Sameline...
I think that the better way would be using imgui.Dummy to move cursor (it is treated as a widget).
But this generates another problemm: in current implementation of animator's internal state will apply trigger to this dummy, not widget