feat: add rollback button

src/snapshot.py

@@ -94,3 +94,8 @@ class Snapshot:
             raycast_distances=car.rays.copy(),
             image=None
         )
+
+    def apply(self, car: Car):
+        car.pos = self.position.copy()
+        car.direction = self.direction.copy()
+        car.speed = 0