Pin Input Component

[whoisandy]

Discussed in https://github.com/mantinedev/mantine/discussions/3128

^{Originally posted by **whoisandy** December 6, 2022} First off thanks for an amazing component library! It would be cool to add a `PinInput` component to the core package as well. Could be used to capture any one time passwords or verification codes used to login during auth or 2fa process? Check out a working [example here](https://hqwr3g.csb.app). The code to the `PinInput` component can be found [here](https://codesandbox.io/s/focused-monad-hqwr3g?file=/src/PinInput.tsx). This example above has a bare minimum code to explore the functionality needed for a pin input, similar the [pin input component](https://chakra-ui.com/docs/components/pin-input) in `@chakra-ui` framework. 

[rtivital]

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