lib: Add representation to hashes

lib/common.py

@@ -60,6 +60,12 @@ class State:
     def __hash__(self):
         return hash(self.name)
 
+    def __str__(self) -> str:
+        return self.name
+
+    def __repr__(self) -> str:
+        return f"State({self.name})"
+
 
 class Eps:
     def __init__(self):