feat: windows build instructions

WINDOWS.md

@@ -0,0 +1,25 @@
+
+# Setup VCPKG
+
+```console
+git clone https://github.com/microsoft/vcpkg C:\vcpkg
+C:\vcpkg\bootstrap-vcpkg.bat
+# install deps for 64-bit Windows
+C:\vcpkg\vcpkg install sdl3 glew glm --triplet x64-windows
+```
+
+# Configure
+
+```console
+cmake -S . -B build `
+  -G "Visual Studio 17 2022" -A x64 `
+  -DCMAKE_TOOLCHAIN_FILE=C:/vcpkg/scripts/buildsystems/vcpkg.cmake `
+  -DVCPKG_TARGET_TRIPLET=x64-windows `
+  -DCMAKE_BUILD_TYPE=Debug
+```
+
+# Build
+
+```console
+cmake --build build --config Debug
+```