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/test/qz/installer/provision/resources/cert1.crt

@@ -0,0 +1,60 @@
+-----BEGIN CERTIFICATE-----
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+-----END CERTIFICATE-----
+--START INTERMEDIATE CERT--
+-----BEGIN CERTIFICATE-----
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+-----END CERTIFICATE-----