Squash: add missing licence headers.

IntelliJ doesn't preserve them in a refactor apparently.

Author: JonathanLennox

src/main/kotlin/org/jitsi/utils/RateLimit.kt

@@ -1,3 +1,20 @@
+/*
+ * Jicofo, the Jitsi Conference Focus.
+ *
+ * Copyright @ 2015-Present 8x8, Inc.
+ *
+ * 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.
+ */
 package org.jitsi.utils
 
 import java.time.Clock

src/test/kotlin/org/jitsi/utils/RateLimitTest.kt

@@ -1,3 +1,20 @@
+/*
+ * Jicofo, the Jitsi Conference Focus.
+ *
+ * Copyright @ 2018 - present 8x8, Inc.
+ *
+ * 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.
+ */
 package org.jitsi.utils
 
 import io.kotest.core.spec.style.ShouldSpec