Initial commit: TS3J TeamSpeak 3 Java client

Swing desktop client (core/desktop/swing Maven modules) built on the
ts3j protocol library, included as a submodule. Native Opus voice with
voice-activation detection, push-to-talk, and audio pre-processing.

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

ts3-client/swing/src/main/java/com/ts3client/Main.java

@@ -0,0 +1,33 @@
+package com.ts3client;
+
+import com.ts3client.config.Settings;
+import com.ts3client.ui.MainFrame;
+
+import javax.swing.SwingUtilities;
+import javax.swing.UIManager;
+
+/**
+ * Application entry point. Loads settings, applies the system look-and-feel and
+ * shows the main window on the Swing event dispatch thread.
+ */
+public final class Main {
+
+    public static void main(String[] args) {
+        // ts3j is verbose by default; keep the console quiet unless debugging.
+        try {
+            com.github.manevolent.ts3j.util.Ts3Debugging.setEnabled(false);
+        } catch (Throwable ignored) {
+        }
+
+        final Settings settings = Settings.load();
+
+        SwingUtilities.invokeLater(() -> {
+            try {
+                UIManager.setLookAndFeel(UIManager.getSystemLookAndFeelClassName());
+            } catch (Exception ignored) {
+                // fall back to cross-platform L&F
+            }
+            new MainFrame(settings).setVisible(true);
+        });
+    }
+}