config: add urgency window criteria

src/criteria/tlm/tlm_matchers/tlmm_urgent.rs

@@ -0,0 +1,11 @@
+use crate::{criteria::crit_graph::CritFixedRootCriterion, tree::ToplevelData};
+
+pub struct TlmMatchUrgent(pub bool);
+
+fixed_root_criterion!(TlmMatchUrgent, urgent);
+
+impl CritFixedRootCriterion<ToplevelData> for TlmMatchUrgent {
+    fn matches(&self, data: &ToplevelData) -> bool {
+        data.wants_attention.get()
+    }
+}