Clear and concise description of the problem

I'd like tsdown to add node: prefix to builtin module in Node.js automatically.
tsdown has removeNodeProtocol but this is the opposite option.

Currently I'm using rollup-plugin-node-externals, but I prefer using this operation with adding a single option to tsdown.

Suggested solution

I suggest to add a new plugin which is similar to rollup-plugin-node-externals internally.
Also we can exports the option of rollup-plugin-node-externals to manage the node prefix. They supports builtinsPrefix option (builtinsPrefix?: 'add' | 'strip' | 'ignore')

Alternative

No response

Additional context

No response

Validations

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