Export settings and undo improvements

This update enhances export settings and increases the number of undo steps available to users.

Changes

• Fix export settings; now, you can set a ratio to export high-resolution images.
• Fix lights selection; the resize box is no longer displayed.
• Increase undo steps 2x (up to 60 undos are now available).
• Fix bugs related to UI properties.
• Fix dragging of colors to the color palette.
• Fix resizing offset of importing objects.
• Added new toggle in the Visibility component to control material sides.
• Added new fresnel property to control the factor of the effect.