feat: member fetching with roles (#299)

crates/delta/src/routes/servers/roles_fetch.rs

@@ -0,0 +1,19 @@
+use revolt_quark::{models::server::Role, Db, Error, Ref, Result};
+use rocket::serde::json::Json;
+
+/// # Fetch Role
+///
+/// Fetch a role by its id.
+#[openapi(tag = "Server Permissions")]
+#[get("/<target>/roles/<role_id>")]
+pub async fn req(db: &Db, target: Ref, role_id: String) -> Result<Json<Role>> {
+    let server = target.as_server(db).await?;
+
+    let role = server.roles.get(&role_id);
+
+    if let Some(role) = role {
+        Ok(Json(role.clone()))
+    } else {
+        Err(Error::NotFound)
+    }
+}