scirpt: build script.

Script/qt6build.bat

@@ -0,0 +1,13 @@
+@echo off
+cd ..
+xmake f -p windows -a x64 -m release --qt=C:\Qt\6.8.3 --gui=y -o build-qt6 -v
+xmake -r
+set outDir=%~dp0..\build-qt6\windows\x64\release\
+if %errorlevel% equ 0 (
+	del /q "%outDir%\*.lib" 2>nul
+	for /f "delims=" %%f in ('dir /b /a-d "%outDir%\*Test*" 2^>nul') do (
+        	del /q "%outDir%\%%f"
+        )
+	C:\Qt\6.8.3\bin\windeployqt.exe %outDir%frelayGUI.exe
+)
+pause