Fields
- orientation: enum u8 { HORIZONTAL :: 0; VERTICAL :: 1; }
- divider_theme: Button_Theme
- divider_thickness_type: := Size_Computation.ABSOLUTE_FROM_GLOBAL
- divider_thickness: := .02
- initial_divider_position_type: := Size_Computation.RELATIVE_TO_HEIGHT
- initial_divider_position: := 0.5
- first_background: Background_Theme
- second_background: Background_Theme