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/core/pom.xml

@@ -0,0 +1,23 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<project xmlns="http://maven.apache.org/POM/4.0.0"
+         xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+         xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
+    <modelVersion>4.0.0</modelVersion>
+
+    <parent>
+        <groupId>com.ts3client</groupId>
+        <artifactId>ts3-client-parent</artifactId>
+        <version>0.1.0</version>
+    </parent>
+
+    <artifactId>ts3-client-core</artifactId>
+    <name>TS3J Client Core</name>
+    <description>Frontend-agnostic library: protocol integration, model, audio abstractions</description>
+
+    <dependencies>
+        <dependency>
+            <groupId>com.github.manevolent</groupId>
+            <artifactId>ts3j</artifactId>
+        </dependency>
+    </dependencies>
+</project>