- Add inverse examples for all variants
- Use rgba() colors for hover and accent states for easy usage in inverse styles

Update tags/labels/badges migration docs to mention class and change in behavior for alignment in list groups

- Really we didn't need to do any of that strip units stuff to generate six new variables, two for each button size
- Using sibling selectors, we can target those split button dropdown toggles using the .dropdown-toggle-split class, and adjust padding and margin as needed
- Now, we nuke the margin-left from the ::after generated caret and tighten up the padding so that those split toggles don't look huge next to their main button

- Includes new class
- New docs to support it
- Rearranged older docs

- Add lighter gray text to disabled state for .form-check
- Separate radios and checkboxes example
- Clarify docs

- Move disabled radio and checkbox styles to Reboot
- Collapse .radio and .checkbox into single class, .form-check
- Collapse .radio-inline and .checkbox-inline into single class, .form-check-inline
- Require classes for sub-elements in both new classes

Fixes #18705: Clarify removal of .help-text and update changes to .form-group for horizontal layouts

- Change some things around, add some copy
- Include table variant styles for the inverse tables thanks to bg and color utils

[skip sauce]

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