Feature Request: Add indentation option to normalization

[Xen0Xys]

Hello,
It would be a great addition if you could implement an option to enforce 4-space indentation (instead of tabs or 2 spaces) when using normalization.
Let me know if you need further context. Thanks for considering this!

[noppa]

Does libxml / xmllint-wasm provide an option for this? If not, I think it's probably out of scope for this project.
Indentation changes should be pretty simple to do with JavaScript after getting the normalized output from xmllint.