Gen 5 Repel system

Also used in PureRGB. Gives the player the option to use another Repel after the last one runs out.

I had to remove some debug features in order to fit it in, but it won't have an effect on the regular game. Hopefully.

data/text/text_4.asm

@@ -20,6 +20,10 @@ _PlayerBlackedOutText::
 _RepelWoreOffText::
 	text "REPEL's effect"
 	line "wore off."
+	prompt
+
+_RepelUseAnotherText::
+	text "Use another?"
 	done
 
 _PokemartBuyingGreetingText::