Allow all tools to work on rotated layers

[JordanMagnuson]

Part of Improvements to bounding boxes and rasterized layers

Intermediate solution:

• [ ] Program setting to "automatically rasterize layer when attempting to use tools on it" (So e.g. attempting to erase on a rotated layer would automatically rasterize the layer so the erase can be performed.)

List of tools that need to be updated to work on rotated layers:

• [ ] Image > Trim (trim layer does not currently work correctly on rotated layers)
• [ ] Selection tool (currently selection is not transformed correctly when e.g. copying or deleting selection of rotated layer)
• [ ] Erase
• [ ] Magic wand
• [ ] Paint bucket / Fill
• [ ] Clone
• [ ] Crop
• [ ] Blur
• [ ] Sharpen
• [ ] Desaturate
• [ ] Bulge/Pinch

See https://github.com/viliusle/miniPaint/issues/287#issuecomment-1035550687 See https://github.com/viliusle/miniPaint/issues/287#issuecomment-1036215450

See also Setting to automatically trim/expand layer size after image manipulation

[JordanMagnuson]

An easier intermediate "solution" to using tools on rotated layers could be to have a program setting to "automatically rasterize layer when attempting to use tools on it." (So e.g. attempting to erase on a rotated layer would automatically rasterize the layer so the erase can be performed.)