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/ant/windows/nsis/Include/StrRep.nsh

@@ -0,0 +1,66 @@
+!define StrRep "!insertmacro StrRep"
+!macro StrRep output string old new
+    Push `${string}`
+    Push `${old}`
+    Push `${new}`
+    ;!ifdef __UNINSTALL__
+    ;    Call un.StrRep
+    ;!else
+        Call StrRep
+    ;!endif
+    Pop ${output}
+!macroend
+
+!macro Func_StrRep un
+    Function ${un}StrRep
+        Exch $R2 ;new
+        Exch 1
+        Exch $R1 ;old
+        Exch 2
+        Exch $R0 ;string
+        Push $R3
+        Push $R4
+        Push $R5
+        Push $R6
+        Push $R7
+        Push $R8
+        Push $R9
+
+        StrCpy $R3 0
+        StrLen $R4 $R1
+        StrLen $R6 $R0
+        StrLen $R9 $R2
+        loop:
+            StrCpy $R5 $R0 $R4 $R3
+            StrCmp $R5 $R1 found
+            StrCmp $R3 $R6 done
+            IntOp $R3 $R3 + 1 ;move offset by 1 to check the next character
+            Goto loop
+        found:
+            StrCpy $R5 $R0 $R3
+            IntOp $R8 $R3 + $R4
+            StrCpy $R7 $R0 "" $R8
+            StrCpy $R0 $R5$R2$R7
+            StrLen $R6 $R0
+            IntOp $R3 $R3 + $R9 ;move offset by length of the replacement string
+            Goto loop
+        done:
+
+        Pop $R9
+        Pop $R8
+        Pop $R7
+        Pop $R6
+        Pop $R5
+        Pop $R4
+        Pop $R3
+        Push $R0
+        Push $R1
+        Pop $R0
+        Pop $R1
+        Pop $R0
+        Pop $R2
+        Exch $R1
+    FunctionEnd
+!macroend
+!insertmacro Func_StrRep ""
+;!insertmacro Func_StrRep "un."