add: user socket streams

add: group messages by author in ui
TODO: group messages by author in ui as they come in from socket
TODO: notifications stream connection

crates/app/src/routes/api/v1/mod.rs

@@ -191,6 +191,10 @@ pub fn routes() -> Router {
             get(auth::profile::redirect_from_ip),
         )
         .route("/auth/ip/{ip}/block", post(auth::social::ip_block_request))
+        .route(
+            "/auth/user/{id}/_connect/{stream}",
+            get(auth::profile::subscription_handler),
+        )
         // warnings
         .route("/warnings/{id}", post(auth::user_warnings::create_request))
         .route(