implement bfs algorythm

agentActionType.py

@@ -4,3 +4,4 @@ class AgentActionType (Enum):
     MOVE_FORWARD = 0
     TURN_LEFT = 1
     TURN_RIGHT = 2
+    UNKNOWN = None

agentState.py

@@ -0,0 +1,10 @@
+from agentOrientation import AgentOrientation
+from typing import Tuple
+
+class AgentState:
+    orientation: AgentOrientation
+    position: Tuple[int, int]
+
+    def __init__(self, position: Tuple[int, int], orientation: AgentOrientation) -> None:
+        self.orientation = orientation
+        self.position = position

gridCellType.py

@@ -5,3 +5,4 @@ class GridCellType(Enum):
     STREET_VERTICAL = 1
     STREET_HORIZONTAL = 2
     GARBAGE_CAN = 3
+    VISITED_GARBAGE_CAN = 4