refactor(rust): align workspace with style rules

src/monorepo/workspace.rs

@@ -0,0 +1,20 @@
+use std::path::PathBuf;
+
+pub fn resolve_workspace_path(path: PathBuf) -> PathBuf {
+    resolve_workspace_path_impl(
+        path,
+        std::env::var_os("BUILD_WORKSPACE_DIRECTORY").map(PathBuf::from),
+    )
+}
+
+fn resolve_workspace_path_impl(path: PathBuf, workspace: Option<PathBuf>) -> PathBuf {
+    if path.is_absolute() {
+        return path;
+    }
+
+    if let Some(workspace) = workspace {
+        return workspace.join(path);
+    }
+
+    path
+}