feat(cdk/drag-drop): add mixed orientation support using transform

[nghiadg]

Feature Description

These changes implement a new DropListSortStrategy that allows sorting of lists that can wrap by moving them using a transform which keeps the DOM stable and allows for the sorting to be animated

The new strategy can be enabled by setting cdkDropListOrientation="mixed".

[crisbeto]

Closing based on #29394 (comment).

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