chore: set copyright holder to Wualabs LTD; allow Wualabs in cspell

Author: mrmx

.cspell.json

@@ -4,6 +4,7 @@
   "words": [
     "qtsurfer",
     "QTSurfer",
+    "Wualabs",
     "backtest",
     "backtesting",
     "Backtest",

LICENSE

@@ -186,7 +186,7 @@
       same "printed page" as the copyright notice for easier
       identification within third-party archives.
 
-   Copyright 2026 QTSurfer
+   Copyright 2026 Wualabs LTD
 
    Licensed under the Apache License, Version 2.0 (the "License");
    you may not use this file except in compliance with the License.