Miniprofiler (#42385)

Release Notes:

- Added hang detection and a built in performance profiler

crates/paths/src/paths.rs

@@ -155,6 +155,12 @@ pub fn temp_dir() -> &'static PathBuf {
     })
 }
 
+/// Returns the path to the hang traces directory.
+pub fn hang_traces_dir() -> &'static PathBuf {
+    static LOGS_DIR: OnceLock<PathBuf> = OnceLock::new();
+    LOGS_DIR.get_or_init(|| data_dir().join("hang_traces"))
+}
+
 /// Returns the path to the logs directory.
 pub fn logs_dir() -> &'static PathBuf {
     static LOGS_DIR: OnceLock<PathBuf> = OnceLock::new();