Fixes #66: Add minimal logging to example rust native library

[akintewe]

66

This pull request implements the following:

• Created a new example called rust_android_logging based on the current example app
• Initialized a new Rust library project with logging dependencies
• Implemented logging functions in src/lib.rs and exported them with #[no_mangle]
• Used cargo-ndk to cross-compile the Rust code for Android architectures
• Added the compiled Rust library to the Android project's jniLibs
• Created a JNI wrapper in Java/Kotlin to call the Rust logging functions
• Compiled and tested the Android project with the new logging functionality