go through a ton of pedantic clippy lints

Signed-off-by: strawberry <strawberry@puppygock.gay>

src/database/key_value/rooms/user.rs

@@ -131,7 +131,7 @@ impl service::rooms::user::Data for KeyValueDatabase {
 
                     Ok::<_, Error>(room_id)
                 })
-                .filter_map(|r| r.ok())
+                .filter_map(std::result::Result::ok)
         });
 
         // We use the default compare function because keys are sorted correctly (not reversed)