feat: add logic that allows piece to move

entity/Piece.py

@@ -35,9 +35,15 @@ class Piece:
         for sub_points in self.points:
             pygame.draw.polygon(surface, base_color, sub_points, 0)
             pygame.draw.polygon(surface, border_color, sub_points, max(tile_size // 6, 1))
-        
+
+    def move(self, vector):
+        for sub_points in self.points:
+            for point in sub_points:
+                point[0] += vector[0]
+                point[1] += vector[1]
+ 
     # rotate the piece clockwise
-    def rotate():
+    def rotate(self):
         pass
 
     # shape attributes