Move some items to inventory folder and names cleanup

gymkhana/rooms/trasera_cocina/esc/entrada_cocina.esc

@@ -6,7 +6,7 @@ say player "Parece que veo a Mikel"
 play_snd res://game/sfx/sounds/doorOpen_2.ogg
 change_scene "res://gymkhana/rooms/interior_cocina/interior_cocina.tscn"
 
-:action3 i_bombona2
+:action3 bombona2
 say player "He usado la 'bombona' con la puerta"
 # > [eq r5_dialog_advance 2]
 # 	say player "I already fixed the water leak."
@@ -19,5 +19,5 @@ say player "He usado la 'bombona' con la puerta"
 # accept_input ALL
 
 
-:action4 i_bombona2
+:action4 bombona2
 say player "No creo que les haga gracia"