Rename UrlParser::schemes to scheme_type_mapper.
Rename UrlParser::schemes to scheme_type_mapper.

pyfisch/rust-url,jgillich/rust-url,jgillich/rust-url,cGuille/rust-url,pyfisch/rust-url,nox/rust-url,servo/rust-url,cGuille/rust-url,nox/rust-url,servo/rust-url