split main bot lib into multiple smaller libs and improve end game message

entities/player.py

@@ -28,6 +28,15 @@ class BrSimPlayer():
   def get_gender(self):
     return self.gender
 
+  def player_gender_is_male(self):
+    return self.gender == 'm'
+
+  def player_gender_is_female(self):
+    return self.gender == 'f'
+
+  def player_gender_is_not_binary(self):
+    return self.gender == '-'
+
   def get_inventory(self):
     return self.inventory