chore: update and automatically install premake5

generate.bat

@@ -1,6 +1,62 @@
 @echo off
 
+set PREMAKE_URL="https://github.com/premake/premake-core/releases/download/v5.0.0-beta4/premake-5.0.0-beta4-windows.zip"
+set PREMAKE_HASH="12d741d3b70445b025c03e26148e2d129801041fa5ddde61b4ac888a76017395"
+
+goto start
+
+:downloadpremake
+
+if not exist "build" mkdir "build"
+
+powershell -Command "Invoke-WebRequest %PREMAKE_URL% -OutFile build/premake.zip"
+IF %ERRORLEVEL% NEQ 0 (
+    echo Download failed >&2
+    exit 2
+)
+
+powershell -Command "Expand-Archive -LiteralPath build/premake.zip -DestinationPath build"
+IF %ERRORLEVEL% NEQ 0 (
+    echo Extraction failed >&2
+    exit 2
+)
+
+rm build/premake.zip
+
+powershell -Command "if ((Get-FileHash -LiteralPath build/premake5.exe -Algorithm SHA256).Hash -eq \"%PREMAKE_HASH%\") { exit 0 } else { exit 1 }"
+IF %ERRORLEVEL% NEQ 0 (
+    echo Hash verification failed >&2
+    rm build/premake5.exe
+    exit 2
+)
+
+exit /B 0
+
 cd %~dp0
 
+:start
+where /q "premake5.exe"
+IF %ERRORLEVEL% EQU 0 (
+    set PREMAKE_BIN="premake5.exe"
+    goto runpremake
+)
+
+IF EXIST build/premake5.exe (
+    set PREMAKE_BIN="build/premake5.exe"
+    goto runpremake
+)
+
+echo Could not find premake5. You can either install it yourself or this script download it for you.
+set /p choice="Do you wish to download it automatically? [y/N]> "
+if /i "%choice%"=="y" (
+    call:downloadpremake
+    set PREMAKE_BIN="build/premake5.exe"
+    goto runpremake
+)
+
+echo Please install premake5 and try again
+exit 1
+
+:runpremake
 git submodule update --init --recursive
-tools\premake5.exe %* vs2022
+%PREMAKE_BIN% %* vs2022