Split files from event_scripts.s

Also move maps/scripts to scripts/maps

data/scripts/maps/SlateportCity_Mart.inc

@@ -0,0 +1,47 @@
+SlateportCity_Mart_MapScripts:: @ 820DC48
+	.byte 0
+
+SlateportCity_Mart_EventScript_20DC49:: @ 820DC49
+	lock
+	faceplayer
+	message gUnknown_08272A21
+	waitmessage
+	pokemart SlateportCity_Mart_Pokemart_20DC60
+	msgbox gUnknown_08272A3F, 4
+	release
+	end
+
+SlateportCity_Mart_Pokemart_20DC60: @ 820DC60
+	.2byte ITEM_POKE_BALL
+	.2byte ITEM_GREAT_BALL
+	.2byte ITEM_POTION
+	.2byte ITEM_SUPER_POTION
+	.2byte ITEM_ANTIDOTE
+	.2byte ITEM_PARALYZE_HEAL
+	.2byte ITEM_ESCAPE_ROPE
+	.2byte ITEM_REPEL
+	.2byte ITEM_HARBOR_MAIL
+	.2byte ITEM_NONE
+	release
+	end
+
+SlateportCity_Mart_EventScript_20DC76:: @ 820DC76
+	msgbox SlateportCity_Mart_Text_20DC88, 2
+	end
+
+SlateportCity_Mart_EventScript_20DC7F:: @ 820DC7F
+	msgbox SlateportCity_Mart_Text_20DCF8, 2
+	end
+
+SlateportCity_Mart_Text_20DC88: @ 820DC88
+	.string "The MARKET does have some interesting\n"
+	.string "merchandise.\p"
+	.string "But there are some items you can only\n"
+	.string "get at a POKéMON MART.$"
+
+SlateportCity_Mart_Text_20DCF8: @ 820DCF8
+	.string "A GREAT BALL is better than a POKé BALL\n"
+	.string "at catching POKéMON.\p"
+	.string "With this, I should be able to get that\n"
+	.string "elusive POKéMON…$"
+