Improve support for components with affine transforms

[sudara]

Right now, we ignore them.

The overlay bounding box doesn't take them into account.

And worse, the model's valueChanged method actually strips the transform when setting left/top values, to prevent some endless feedback of values changing.

• Updated bounding box to take into account component's transform
• Draw dotted bounding box where non-transformed bounds are
• Show the transform in properties
• Ensure updating x/y respects existing transform

For the latter, I think we need to display if it's isIdentity, the translation x/y, if it's translation only, the scale factor as determined by std::sqrt (std::abs (AffineTransform::getDeterminant()))