Allow custom creatable and searchable labels in Pickers

[iSplasher]

What problem does this feature solve?

I am using v5.

This feature would allow for a more appropriate label that suits the context. Imagine an InputPicker like this

In my case a more appropriate label would be Create gender "Other".
This would also help if you decide to use a custom localization solution outside of rsuite.

I hope this could also be applied to the other related picker components.

What does the proposed API look like?

Maybe something like this?

<InputPicker
      creatable
      creatableLabel="Create gender"
      data={data}
    />

Or for maximum flexibility, allow passing a template string:

<InputPicker
      creatable
      creatableLabel="Create gender ${value}"
      data={data}
    />

[iSplasher]

If you would like then I can create a PR for this

[simonguo]

You can modify the locales configuration to meet your business scenarios.
https://github.com/rsuite/rsuite/blob/next/src/locales/en_US.ts#L55

In addition, you can also just modify the locale of InputPicker.

<InputPicker
  locale={{createOption: "Create gender ${0}" }}
/>

[iSplasher]

Wow yes thank you, I missed that!