change build system to CMake and use SDL3 for everything

libs/SDL3/docs/INTRO-androidstudio.md

@@ -0,0 +1,17 @@
+
+# Introduction to SDL with Android Studio
+
+We'll start by creating a simple project to build and run [hello.c](hello.c)
+
+- Use our handy script to create a template project:
+```sh
+./build-scripts/create-android-project.py org.libsdl.hello docs/hello.c
+```
+- Run Android Studio and open the newly created build/org.libsdl.hello directory
+- Build and run!
+
+A more complete example is available at:
+
+https://github.com/Ravbug/sdl3-sample
+
+Additional information and troubleshooting is available in [README-android.md](README-android.md)