Request voice properties in clientlist

Without -voice the server omits client_input_muted/output_muted and
the hardware flags entirely, so a bare clientlist leaves callers
unable to tell "false" from "not reported" and defaults them wrong.

src/main/java/com/github/manevolent/ts3j/protocol/socket/client/LocalTeamspeakClientSocket.java

@@ -1168,6 +1168,13 @@ public class LocalTeamspeakClientSocket
             throws IOException, TimeoutException, InterruptedException, CommandException {
         Command command = new SingleCommand("clientlist", ProtocolRole.CLIENT);
 
+        // Without -voice the server omits input/output muted and hardware flags, talk
+        // power and the rest of the voice-related properties entirely — not "false", just
+        // absent — so callers reading them from a bare clientlist would see false either way.
+        CommandOption voice = new CommandOption("voice");
+        voice.set(true);
+        command.add(voice);
+
         return executeCommand(command, x -> new Client(x.toMap())).get();
     }