fix(command): include toaster.tsx with 'npx shadcn-ui add toast' cli cmd

[puneet-sarhali]

fixes #495

Running build-component.ts script also updated the change from import { VariantProps, cva } to import { type VariantProps, cva } for other components.

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[shadcn]

@puneet-sarhali I believe this is fixed now. If not, please reopen. Thank you.