[PortPather] add rename_to and rename_from

masque/builder/pather_mixin.py

@@ -527,3 +527,11 @@ class PortPather:
     def set_rotation(self, rotation: float | None) -> Self:
         self.pather[self.port].set_rotation(rotation)
         return self
+
+    def rename_to(self, new_name: str) -> Self:
+        self.pather.rename_ports({self.port: new_name})
+        return self
+
+    def rename_from(self, old_name: str) -> Self:
+        self.pather.rename_ports({old_name: self.port})
+        return self