Walk proto dirs instead of manually specifying files

[graysonguarino]

Issue Number:
Reference the issue this PR fixes.

Description of Changes:
Provide a clear and concise explanation of what changes you made and why.

• Walk protobuf directory instead of needing to manually specify which files are to be included.

Testing Done:
How did you test your changes? Share details like steps, tools used, or results.

Terms of contribution:

By submitting this pull request, I agree that this contribution is licensed under the terms of the Apache License, Version 2.0.

---

Thanks for submitting your pull request! We will review it as soon as possible.

[ecpullen]

Is this any cleaner?

Suggested change

	fn fetch_proto_dirs(
	proto_package_dir: &Path,
	proto_version: usize,
	ignore_modules: Vec<&str>,
	) -> std::io::Result<Vec<PathBuf>> {
	let version_str = format!("v{proto_version}");
	let ignore_components = ignore_modules
	.iter()
	.map(|module| Component::Normal(OsStr::new(module)))
	.collect::<Vec<_>>();
	let proto_paths = WalkDir::new(proto_package_dir)
	.into_iter()
	.filter(|entry| {
	let entry = if let Ok(entry) = entry {
	entry
	} else {
	return false;
	};
	entry.path().extension().is_some_and(|ext| ext == "proto")
	&& entry
	.path()
	.components()
	.any(|comp| comp == Component::Normal(OsStr::new(&version_str)))
	&& !entry
	.path()
	.components()
	.any(|comp| ignore_components.contains(&comp))
	})
	.collect::<Result<Vec<_>, _>>()?;
	Ok(proto_paths
	.iter()
	.map(|entry| entry.path().to_path_buf())
	.collect::<Vec<PathBuf>>())
	}
	fn fetch_proto_dirs(
	proto_package_dir: &Path,
	proto_version: usize,
	ignore_modules: &[&str],
	) -> std::io::Result<Vec<PathBuf>> {
	let version_str = format!("v{proto_version}");
	Ok(WalkDir::new(proto_package_dir)
	.into_iter()
	// Remove all files that don't have read permission
	.filter_map(|e| e.ok())
	.filter(|entry| entry.path().extension().is_some_and(|ext| ext == "proto"))
	.filter(|entry| entry.path().components().filter_map(|comp| comp.as_os_str().to_str()).any(|comp| comp == version_str))
	.filter(|entry| !entry.path().components().filter_map(|comp| comp.as_os_str().to_str()).any(|comp| ignore_modules.contains(&comp)))
	.map(|entry| entry.path().to_path_buf()).collect())
	}