Shared element prototype

[KovalevAndrey]

Description

Shared element transition integration into Appyx. Duplicates #701

1. Clients need to use withSharedElementTransition: Boolean = true on Children layout when drawing children.
2. Use sharedElement Modifier In Node's UI implementation and provide a key that matches the appropriate element's key in the other Node's UI.

Added support for movableContent. Now we can "move one part of the composable tree" from one child node to another without losing its state. We can only move content between the Node that is transitioning to invisible state to the Node that is transitioning to visible state because movable content is meant to be composed only once at any time. For instance: NodeA is currently shown in a BackStack and we push NodeB to BackStack. In this case we can move content from NodeA to NodeB. To move the content we need to use localMovableContentWithTargetVisibility with the correct key in each child Node.

Screen_recording_20240429_204738.mp4

Checklist

• I've updated CHANGELOG.md if required.
• I've updated the documentation if required.