Handling Tor and i2p in NURLs

[itamarst]

NURLs, the new furl replacement that is HTTP based, does not currently support Tor or i2p syntactically. It just has a hostname field... The hyperlink library also has issues with parsing it if is forced in to the hostname, which may be legitimate "this is not a valid URI/URL" complaint.

One alternative is to switch to combo protocol URLs, e.g.:

pb://1WUX44xKjKdpGLohmFcBNuIRN-8rlv1Iij_7rQ@127.1:34399/jhjbc3bjbhk#v=1
pb+tor+https://1WUX44xKjKdpGLohmFcBNuIRN-8rlv1Iij_7rQ@127.1:34399/jhjbc3bjbhk#v=1
pb+i2p://1WUX44xKjKdpGLohmFcBNuIRN-8rlv1Iij_7rQ@sdsdfsdfds/jhjbc3bjbhk#v=1

Changing the NURL to this could be backwards compatible if pb:// is synonym for normal HTTPS, as above.