Add batch script to automatically generate visual studio solution

scripts/generate.bat

@@ -0,0 +1,50 @@
+@ECHO OFF
+SETLOCAL
+
+REM ensure the script is always running inside the core's root directory
+CD %~DP0..
+
+CALL "%~DP0install-lua.bat"
+CALL "%~DP0install-premake5.bat"
+
+:SELECT
+CLS
+ECHO Select installed visual studio version
+ECHO 1.vs2017
+ECHO 2.vs2017 (Windows XP, requires toolset v141_xp to be installed)
+ECHO 3.vs2019
+ECHO 4.vs2022
+
+ECHO.
+
+SET /P OP="Enter your choice: "
+
+IF %OP% == 4 GOTO VS2022
+IF %OP% == 3 GOTO VS2019
+IF %OP% == 2 GOTO VS2017_XP
+IF %OP% == 1 GOTO VS2017
+
+ECHO Invalid Option
+GOTO SELECT
+
+:CONFIGURE
+premake5 %VISUAL_STUDIO_VERSION% %PREMAKE_EXTRA_FLAGS%
+IF %ERRORLEVEL% NEQ 0 EXIT /B %ERRORLEVEL%
+START build/ocgcore.sln
+
+EXIT /B
+
+
+:VS2017_XP
+  SET PREMAKE_EXTRA_FLAGS="--oldwindows=true"
+:VS2017
+  SET VISUAL_STUDIO_VERSION=vs2017
+  GOTO CONFIGURE
+
+:VS2019
+  SET VISUAL_STUDIO_VERSION=vs2019
+  GOTO CONFIGURE
+
+:VS2022
+  SET VISUAL_STUDIO_VERSION=vs2022
+  GOTO CONFIGURE