add copyright

Signed-off-by: Kerry Archibald <[email protected]>

Author: Kerry Archibald

test/stores/OwnBeaconStore-test.ts

@@ -1,3 +1,19 @@
+/*
+Copyright 2022 The Matrix.org Foundation C.I.C.
+
+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.
+*/
+
 import { Room, Beacon, BeaconEvent } from "matrix-js-sdk/src/matrix";
 
 import { OwnBeaconStore, OwnBeaconStoreEvent } from "../../src/stores/OwnBeaconStore";