Add location to log function

src/dev/log.rs

@@ -1,7 +1,9 @@
+#[track_caller]
 pub fn elog(message: &str) {
     if let Ok(debug) = std::env::var("DEBUG")
         && !debug.is_empty()
     {
-        eprintln!(" [log] {message}");
+        let location = std::panic::Location::caller();
+        eprintln!(" !debug [{location}] {message}");
     }
 }