added levels and update main filepath

levels/level8.txt

+Level 8 (merci à G. Héricourt)
+12
+###########
+#  ##D##  #
+#    M    #
+#    M    #
+#  # M #  #
+#    M    #
+#  # M #  #
+#    M    #
+## # M # ##
+##   M   ##
+## #   # ##
+##   H   ##
+####   ####
+###########
\ No newline at end of file

levels/level9.txt

+Level 9 (merci à G. Héricourt)
+33
+###########
+#####D#####
+####   ####
+####BLB####
+##B#B  # ##
+#B  BBB  K#
+# BBB  BB #
+##H B  B ##
+###########
\ No newline at end of file

main.py

@@ -443,7 +443,7 @@ def readCommand(argv: List[str]) -> List[str]:
     args = dict()
     options, _ = parser.parse_args(argv)
 
-    args["layout"] = grid_from_file("maps/" + options.HellTakerLevels)
+    args["layout"] = grid_from_file("levels/" + options.HellTakerLevels)
     args["method"] = options.agentMethod
     return args