feat: migration APIs to drop 'I' interface prefix

[adidahiya]

Changes proposed in this pull request:

This PR adds the final remaining migration APIs which will allow us to fully drop the "I" interface name prefixes in Blueprint v5.0:

• [core] ❌ IToaster -> ToasterInstance
• [core] ❌ IToastProps -> ToastProps
  • N.B. this was already available before this PR, but the old name was not deprecated yet
• [docs-theme] ❌ IExampleProps -> ExampleProps
• [select] ❌ IItemRendererProps -> ItemRendererProps
• [select] ❌ IItemListRendererProps -> ItemListRendererProps
• [select] ❌ IListItemsProps -> ListItemsProps
• [select] ❌ ICreateNewItem -> CreateNewItem

[blueprint-bot]

feat: migration APIs to drop 'I' interface prefix

Previews: documentation | landing | table | demo

[blueprint-bot]

Fix lint

Previews: documentation | landing | table | demo

[blueprint-bot]

fix lint

Previews: documentation | landing | table | demo