Image controls

[chlorate]

• Button and analog stick shapes that would allow for images to be uploaded for each state.
• Images would be embedded in the JSON file.
• If no images are attached to a control, then it should draw an "X" of sorts to at least show where the control is at.
• Not all images are required. If you were to upload an image for the pressed state, the image would only show while pressed and would be invisible otherwise.
• Rotation field
• Images will be stretched to fit the size of the control.
• "Fit to image" button that resizes the control to be the same size as an image. Maybe fit to image automatically when the first image is attached to the control.
• A blank control with an image could be used as a background image would allow for more elaborate skins rather than basic shapes.