Update dependencies and add new features for improved functionality

- Updated Cargo.lock and Cargo.toml to include new dependencies
- Added new files for backup and watcher functionality in libmarlin
- Introduced integration tests and documentation updates
- Set workspace resolver to version 2 for better dependency resolution

cli-bin/tests/test.md

@@ -65,4 +65,10 @@ sudo install -Dm755 target/release/marlin /usr/local/bin/marlin &&
 cargo test --all -- --nocapture
 ```
 
+or
+
+```bash
+./run_all_tests.sh
+```
+
 Stick that in a shell alias (`alias marlin-ci='…'`) and you’ve got a 5-second upgrade-and-verify loop.