[Feature] Add `Neon` select theme

[younisdev]

Summary

Currently the select component has limited support for dyvix global themes. This issue aims to port the global Neon theme to the select theme registry.

To achieve this, you need to:

1. Add the theme entry in themes.json file referencing the CSS classes of the new theme which should include both dropdown and input classes.
2. Add your CSS classes in themes.css.

Additional Information:

• Check out the modal registry for examples of the Neon theme:

  • modal themes.json.
  • modal themes.css.

• To test your changes:
  1 - Run

  npm install
  npm run dev

  2 - Add your theme name in the devbench select.jsx.

[gargshambhavi0802-pixel]

Hi @younisdev,

I'd like to work on this issue as well, if it's available. I have previously contributed theme-related changes to this repository and would be happy to implement the Neon select theme.

Could you please assign it to me?

Thanks!