ToggleGroup improvements

[techniq]

• [x] Change to variant="..." instead of contained and underlined
• [ ] Allow disabling full ToggleGroup or individual ToggleOption (#28)
• [ ] Supporting changing color based on selected tab
• [ ] Toggle if only 2 times and selected is clicked
• [ ] Add more examples (used as a switch?)
  • https://lunarui.dev/components/navigation/tabs
  • https://codepen.io/hluebbering/pen/PoaWLrw
  • https://paco.me/craft/tabs (using clip path)