Update native libraries from Rust build [skip ci]

Author: actions-user

android/src/main/jniLibs/arm64-v8a/liboffline_first_core.so

@@ -0,0 +1,19 @@
+# Linux Libraries
+
+This directory contains the compiled native libraries for Linux x86_64.
+
+## Files
+- `lib/liboffline_first_core.so` - Dynamic library
+- `lib/liboffline_first_core.a` - Static library
+
+## Usage
+```bash
+# Dynamic linking
+gcc -L./lib -loffline_first_core your_program.c
+
+# Static linking  
+gcc ./lib/liboffline_first_core.a your_program.c
+```
+
+## Dependencies
+- LMDB library: `sudo apt-get install liblmdb-dev`