feat: update license and enhance README; add Xiaohe Shuangpin registry settings

Windows/switch-right-click-menu-to-win11.cmd

@@ -1,3 +1,11 @@
+REM This script switches the right-click context menu to Windows 11 style
+REM by modifying the registry and restarting Windows Explorer
+
+REM Delete registry entry to enable Windows 11 context menu
 reg delete "HKCU\Software\Classes\CLSID\{86ca1aa0-34aa-4e8b-a509-50c905bae2a2}" /f
+
+REM Terminate Windows Explorer process
 taskkill /f /im explorer.exe
+
+REM Restart Windows Explorer to apply changes
 start explorer.exe