bitreq re-encode an already encoded url

[roeierez]

Seems like if we pass an already encoded url for an http request internally it is encoded again causes the query to be doubled encoded.

Input URL: /test?query=%7B%22id%22%7D
Result: /test?query=%257B%2522id%2522%257D

I think the problem is actually in parse implementation that attempts to encode '%' character.

corepc/bitreq/src/http_url.rs

Line 105 in 20b58c4

UrlParseStatus::PathAndQuery | UrlParseStatus::Fragment => match c {