[Feature] Add mode: "all" to decode()

[brianespinosa]

Nice work on this small, performant library. Works great!

If you are open to it, I would like to add a PR that adds an additional option for the decode() function where we could set { mode: "all" }. Currently the most extensive option for encoding is with { mode: "extensive" } which makes sense from a semantic perspective that this does not encode every character. Adding "all" would in fact encode every character.

Why?
I was planning to use this to fully url encode email addresses for showing on a web page. This way, mailto: and the email address itself could be fully entity encoded which should prevent all but the most sophisticated email scraper bots.

If this is out of scope for this library, I understand. Feel free to close this as such. Otherwise, let me know and I can open a PR to add this.