Rewatch: `format --all --check` checks formatting of `node_modules` dependencies

[mediremi]

Unlike the legacy formatter, rescript format --all --check checks the formatting of ReScript files in node_modules dependencies:

$ rescript format --all --check
[format check] /home/mediremi/my_project/node_modules/@rescript/react/src/ReactEvent.res
The file listed above needs formatting
Error: Formatting check failed

[mediremi]

The legacy formatter uses rescript legacy info -list-files to figure out which files to format:

rescript/cli/rescript-legacy/format.js

Lines 181 to 187 in 640bb93

	const output = child_process.spawnSync(
	rescript_legacy_exe,
	["info", "-list-files"],
	{
	encoding: "utf-8",
	},
	);

rescript legacy info -list-files does not return files from node_modules dependencies.

The rewatch formatter gets a list of files to format by looping over every source file of every package:

rescript/rewatch/src/format.rs

Lines 36 to 56 in 8f2970b

	fn get_all_files() -> Result<Vec<String>> {
	let current_dir = std::env::current_dir()?;
	let project_root = helpers::get_abs_path(&current_dir);
	let workspace_root_option = helpers::get_workspace_root(&project_root);
	let build_state = packages::make(&None, &project_root, &workspace_root_option, false, false)?;
	let mut files: Vec<String> = Vec::new();
	for (_package_name, package) in build_state {
	if let Some(source_files) = package.source_files {
	for (path, _metadata) in source_files {
	if let Some(extension) = path.extension() {
	if extension == "res" || extension == "resi" {
	files.push(package.path.join(path).to_string_lossy().into_owned());
	}
	}
	}
	}
	}
	Ok(files)
	}