Synchronize device clipboard to computer

Automatically synchronize the device clipboard to the computer any time
it changes.

This allows seamless copy-paste from Android to the computer.

Fixes #1056 <https://github.com/Genymobile/scrcpy/issues/1056#issuecomment-631363684>
PR #1423 <https://github.com/Genymobile/scrcpy/pull/1423>

server/src/main/aidl/android/content/IOnPrimaryClipChangedListener.aidl

@@ -0,0 +1,24 @@
+/**
+ * Copyright (c) 2008, The Android Open Source Project
+ *
+ * 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 android.content;
+
+/**
+ * {@hide}
+ */
+oneway interface IOnPrimaryClipChangedListener {
+    void dispatchPrimaryClipChanged();
+}