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>
To simplify the device server-side build, use gradle to create an APK, even if we use it as a simple jar, by running its main() method.