Add per user ratelimiting overrides

synapse/storage/schema/delta/41/ratelimit.sql

@@ -0,0 +1,22 @@
+/* Copyright 2017 Vector Creations Ltd
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *    http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+CREATE TABLE ratelimit_override (
+    user_id TEXT NOT NULL,
+    messages_per_second BIGINT,
+    burst_count BIGINT
+);
+
+CREATE UNIQUE INDEX ratelimit_override_idx ON ratelimit_override(user_id);