Bundle libopus natives for a self-contained JAR

Vendor libopus binaries under the desktop module's resources at JNA's
platform resource paths (linux-x86-64/libopus.so, win32-x86-64/opus.dll,
etc.), sourced from the checksum-verified club.minnced:opus-java-natives
1.1.1 artifact with the Windows lib renamed to JNA's mapped name.

Native.load("opus") still prefers a system libopus but now falls back to
the bundled copy, so the shaded uber-JAR runs with no external Opus
install on Linux (x86-64/x86/aarch64/arm), Windows (x86-64/x86) and
Intel macOS.

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>

ts3-client/desktop/src/main/java/com/ts3client/audio/desktop/Opus.java

@@ -9,9 +9,12 @@ import java.nio.IntBuffer;
 /**
  * Minimal JNA binding to the native Opus codec library (libopus).
  *
- * <p>We bind directly to the system-installed {@code libopus.so}/{@code opus.dll}
- * rather than relying on a bundled wrapper. Opus always operates internally at
- * 48&nbsp;kHz which matches what the TeamSpeak 3 protocol uses on the wire.
+ * <p>{@link Native#load} first tries a system-installed {@code libopus.so}/
+ * {@code opus.dll}; failing that, JNA extracts and loads the copy we bundle on
+ * the classpath under its platform resource path (e.g. {@code linux-x86-64/libopus.so},
+ * {@code win32-x86-64/opus.dll}), so the client runs from the single JAR with no
+ * external Opus install. Opus always operates internally at 48&nbsp;kHz which
+ * matches what the TeamSpeak 3 protocol uses on the wire.
  */
 public interface Opus extends Library {