client: Implement Socks identification and authorization (#29591)

Closes #28792 

supersedes #28854 

- Adds support for Socks V4 Identification using a userid, and
Authorization using a username and password on Socks V5.
- Added tests for parsing various Socks proxy urls.
- Added a test for making sure a misconfigured socks proxy url doesn't
expose the user by connecting directly as a fallback.

Release Notes:

- Added support for identification and authorization when using a sock
proxy

crates/client/src/client.rs

@@ -47,6 +47,7 @@ use std::{
 };
 use telemetry::Telemetry;
 use thiserror::Error;
+use tokio::net::TcpStream;
 use url::Url;
 use util::{ResultExt, TryFutureExt};
 
@@ -1127,7 +1128,10 @@ impl Client {
             let stream = {
                 let handle = cx.update(|cx| gpui_tokio::Tokio::handle(cx)).ok().unwrap();
                 let _guard = handle.enter();
-                connect_socks_proxy_stream(proxy.as_ref(), rpc_host).await?
+                match proxy {
+                    Some(proxy) => connect_socks_proxy_stream(&proxy, rpc_host).await?,
+                    None => Box::new(TcpStream::connect(rpc_host).await?),
+                }
             };
 
             log::info!("connected to rpc endpoint {}", rpc_url);