Add custom QZ Tray fork with pairing key authentication

- Custom fork of QZ Tray 2.2.x with certificate validation bypassed
- Implemented pairing key (HMAC) authentication as replacement
- Modified files: PrintSocketClient.java (certificate check disabled)
- New files: PairingAuth.java, PairingConfigDialog.java
- Excluded build artifacts (out/, lib/javafx*) from repository
- Library JARs included for dependency management

tray/src/com/apple/OSXAdapterWrapper.java

@@ -0,0 +1,77 @@
+/**
+ * @author Tres Finocchiaro
+ *
+ * Copyright (C) 2019 Tres Finocchiaro, QZ Industries, LLC
+ *
+ * LGPL 2.1 This is free software.  This software and source code are released under
+ * the "LGPL 2.1 License".  A copy of this license should be distributed with
+ * this software. http://www.gnu.org/licenses/lgpl-2.1.html
+ */
+
+package com.apple;
+
+import com.github.zafarkhaja.semver.Version;
+import org.apache.logging.log4j.LogManager;
+import org.apache.logging.log4j.Logger;
+import qz.common.Constants;
+import qz.utils.MacUtilities;
+
+import java.awt.*;
+import java.lang.reflect.InvocationHandler;
+import java.lang.reflect.Method;
+import java.lang.reflect.Proxy;
+
+/**
+ * Java 9+ compatible shim around Apple's OSXAdapter
+ *
+ * @author Tres Finocchiaro
+ */
+public class OSXAdapterWrapper implements InvocationHandler {
+    private static final Logger log = LogManager.getLogger(OSXAdapterWrapper.class);
+    public static final boolean legacyMode = Constants.JAVA_VERSION.lessThan(Version.valueOf("9.0.0"));
+
+    private Object target;
+    private Method handler;
+
+    public OSXAdapterWrapper(Object target, Method handler) {
+        this.target = target;
+        this.handler = handler;
+    }
+
+    public static void setQuitHandler(Object target, Method handler) {
+        if (!legacyMode) {
+            // Java 9+
+            wrap("java.awt.desktop.QuitHandler", "setQuitHandler", target, handler);
+        } else {
+            // Java 7, 8
+            OSXAdapter.setAboutHandler(target, handler);
+        }
+    }
+
+    public static void setAboutHandler(Object target, Method handler) {
+        if (!legacyMode) {
+            // Java 9+
+            wrap("java.awt.desktop.AboutHandler", "setAboutHandler", target, handler);
+        } else {
+            // Java 7, 8
+            OSXAdapter.setAboutHandler(target, handler);
+        }
+    }
+
+    public static void wrap(String className, String methodName, Object target, Method handler) {
+        try {
+            Class desktop = Desktop.getDesktop().getClass();
+            Class<?> handlerClass = Class.forName(className);
+            Method method = desktop.getDeclaredMethod(methodName, new Class<?>[] {handlerClass});
+            Object proxy = Proxy.newProxyInstance(MacUtilities.class.getClassLoader(), new Class<?>[] {handlerClass}, new OSXAdapterWrapper(target, handler));
+            method.invoke(Desktop.getDesktop(), new Object[] {proxy});
+        } catch (Exception e) {
+            log.warn("Failed to set {}", className, e.getMessage());
+        }
+    }
+
+    public Object invoke(Object proxy, Method m, Object[] args) throws Throwable {
+        handler.invoke(target);
+        return null;
+    }
+}