Select - enhance the examples available on the newly promoted Select Next implementation

[mcarrano]

In order to better show parity between the new/next Select that is being promoted for PatternFly 5, we should enhance the examples available.

In the new Select examples

• Single select: Include a disabled state (using a checkbox control or a second Select side by side)
• Add 'Menu option variations' example. Using one Select with multiple SelectOptions, demonstrate:
  • With description
  • Link
  • With icon
  • Disabled
  • Aria disabled with tooltip
  • include a note to see Menu examples for more variants
• Grouped single: add divider between groups
• Add 'View more' example like the deprecated select
• Add 'With a footer' example like the deprecated select
• Add 'Typeahead with creatable options' example
  • Make sure it replicates onCreateOption to persist new options to menu
• Rename the 'Multiple typeahead' example to 'Multiple typeahead with chips'
• Add 'Multiple typeahead with creatable options' example
  • Make sure it replicates onCreateOption to persist new options to menu
• Add 'Multiple typeahead with checkbox menu items' example
  • Use this code sandbox as a starting point.

Also

• Need to define a PopperProps type to be used by the Select component and exposed on Select page
• Any menu/MenuItem props not exposed in the Select should be added to select docs (i.e. any props spread to the menu/menuitem components)