This PR adds new graphics events and hooks that allow you to hook into graphics drawing before or after any drawing transformations have been applied
  * `Actor.graphics.onPreTransformDraw` with the corresponding event `.on('pretransformdraw')`
  * `Actor.graphics.onPostTransformDraw` with the corresponding event `.on('posttransformdraw')`

This is useful if you want to make changes to the transform or totally influence the draw transform DURING the draw step