Updating components

[Brayden]

• Use LinkComponent instead of <a> or requiring react-router
• Introduce LinkProvider so apps can decide how to handle links
• Breadcrumb prevents a11y focus trap
• PageHeader only shows tabs when they exist
• Combobox shows X when a selection is made instead of down chevron
• Better default accessibility support in components
• Add new Meter component
• Rename Toggle -> Switch to match Base UI naming
• Update Tabs to use Base UI
• Update the Empty leading example
• Update the PageHeader leading example
• Update the ResourceList leading example
• Update LayerCard to support LayerCard.Primary and LayerCard.Secondary options
• Change SelectOption to Select.Option
• Change Dialog subitems to support dot notation also (e.g. Dialog.Title)
• Breadcrumbs support collapsed prop to support hover to expand