chore(apply-patch) scenarios for e2e testing (#7567)

## Summary
This PR introduces an End to End test suite for apply-patch, so we can
easily validate behavior against other implementations as well.

## Testing
- [x] These are tests

codex-rs/apply-patch/tests/suite/mod.rs

@@ -1,3 +1,4 @@
 mod cli;
+mod scenarios;
 #[cfg(not(target_os = "windows"))]
 mod tool;