Add support for Bun

[LitoMore]

Description

It's possible to use Bun as the package manager.

The following library can be used for testing during development:

https://github.com/LitoMore/simple-icons-extreme

Problem

Bun does not have a command similar to npm config get registry. We may need to find some other workarounds for this.

Related

• https://github.com/oven-sh/bun/issues/7140