user and password are not percent-decoded

[prk3]

Hi! It looks like clickhouse-rs does not percent-decode username and password strings extracted from DSNs.

clickhouse-rs/src/types/options.rs

Lines 527 to 529 in 1be33ab

	fn get_password_from_url(url: &Url) -> Option<&str> {
	url.password().map(|password| password)
	}

Because of that, it's not possible to pass a password containing / or other symbols in DSN. Two other libraries that I checked, mysql-async and lapin, decode username and password strings. Example here:

https://github.com/blackbeam/mysql_async/blob/0778dea4c9a9f851ff41753e92208dcdf3824c40/src/opts.rs#L1003-L1014

[suharev7]

Hi! Thanks for this issue. This feature was pushed and will be available in the next release.