Split map scripts, text, events from main.asm

The commit we deserve

maps/TinTowerRoof.asm

@@ -0,0 +1,72 @@
+TinTowerRoof_MapScriptHeader: ; 0x7722b
+	; trigger count
+	db 0
+
+	; callback count
+	db 1
+
+	; callbacks
+
+	dbw 2, UnknownScript_0x77230
+; 0x77230
+
+UnknownScript_0x77230: ; 0x77230
+	checkbit1 $0317
+	iftrue UnknownScript_0x77241
+	checkitem RAINBOW_WING
+	iftrue UnknownScript_0x7723e
+	2jump UnknownScript_0x77241
+; 0x7723e
+
+UnknownScript_0x7723e: ; 0x7723e
+	appear $2
+	return
+; 0x77241
+
+UnknownScript_0x77241: ; 0x77241
+	disappear $2
+	return
+; 0x77244
+
+UnknownScript_0x77244: ; 0x77244
+	faceplayer
+	loadfont
+	2writetext UnknownText_0x77260
+	cry HO_OH
+	pause 15
+	loadmovesprites
+	setbit1 $0317
+	writecode $3, $a
+	loadpokedata HO_OH, 60
+	startbattle
+	disappear $2
+	returnafterbattle
+	setbit1 $07b7
+	end
+; 0x77260
+
+UnknownText_0x77260: ; 0x77260
+	db $0, "Shaoooh!", $57
+; 0x7726a
+
+TinTowerRoof_MapEventHeader: ; 0x7726a
+	; filler
+	db 0, 0
+
+	; warps
+	db 1
+	warp_def $d, $9, 4, GROUP_TIN_TOWER_9F, MAP_TIN_TOWER_9F
+
+	; xy triggers
+	db 0
+
+	; signposts
+	db 0
+
+	; people-events
+	db 1
+	person_event $a2, 9, 13, $16, $0, 255, 255, $80, 0, UnknownScript_0x77244, $073c
+; 0x77282
+
+
+