chore(build): use SDL3

vendor/sdl-3.2.10/docs/README.md

@@ -0,0 +1,45 @@
+# Simple DirectMedia Layer
+
+https://www.libsdl.org/
+
+Simple DirectMedia Layer is a cross-platform development library designed
+to provide low level access to audio, keyboard, mouse, joystick, and graphics
+hardware. It is used by video playback software, emulators, and popular games
+including Valve's award winning catalog and many Humble Bundle games.
+
+SDL officially supports Windows, macOS, Linux, iOS, Android, Xbox, PlayStation 4/5, Nintendo Switch, and many other platforms.
+
+SDL is written in C, works natively with C++, and there are bindings 
+available for several other languages, including C# and Python.
+
+This library is distributed under the zlib license, which can be found
+in the file "LICENSE.txt".
+
+Information on building SDL with CMake is available in [README-cmake.md](README-cmake.md)
+
+The best way to learn how to use SDL is to check out the header files in
+the "include" subdirectory and the programs in the "examples" subdirectory.
+The header files and test programs are well commented and always up to date.
+
+Information on reporting bugs and contributing is available in [README-contributing.md](README-contributing.md)
+
+More documentation and FAQs are available online at the [wiki](http://wiki.libsdl.org/)
+
+- [Migrating from SDL 2.0](README-migration.md)
+- [main()](README-main-functions.md)
+- [High DPI Support](README-highdpi.md)
+- [Touch](README-touch.md)
+- [Supported platforms](README-platforms.md)
+- [Porting information](README-porting.md)
+
+If you need help with the library, or just want to discuss SDL related
+issues, you can join the [SDL Discourse](https://discourse.libsdl.org/),
+which can be used as a web forum or a mailing list, at your preference.
+
+If you want to report bugs or contribute patches, please submit them to
+[our bug tracker](https://github.com/libsdl-org/SDL/issues)
+
+Enjoy!
+
+
+Sam Lantinga <mailto:slouken@libsdl.org>