Split map scripts, text, events from main.asm

The commit we deserve

maps/CeladonMansionRoof.asm

@@ -0,0 +1,54 @@
+CeladonMansionRoof_MapScriptHeader: ; 0x71a37
+	; trigger count
+	db 0
+
+	; callback count
+	db 0
+; 0x71a39
+
+UnknownScript_0x71a39: ; 0x71a39
+	jumptextfaceplayer UnknownText_0x71a3f
+; 0x71a3c
+
+MapCeladonMansionRoofSignpost0Script: ; 0x71a3c
+	jumptext UnknownText_0x71aa1
+; 0x71a3f
+
+UnknownText_0x71a3f: ; 0x71a3f
+	db $0, "High places--I do", $4f
+	db "love them so!", $51
+	db "I'd say the only", $4f
+	db "thing that loves", $51
+	db "heights as much as", $4f
+	db "me is smoke!", $57
+; 0x71aa1
+
+UnknownText_0x71aa1: ; 0x71aa1
+	db $0, "There's graffiti", $4f
+	db "on the wall…", $51
+	db $52, " added a", $4f
+	db "moustache!", $57
+; 0x71ad4
+
+CeladonMansionRoof_MapEventHeader: ; 0x71ad4
+	; filler
+	db 0, 0
+
+	; warps
+	db 3
+	warp_def $1, $1, 1, GROUP_CELADON_MANSION_3F, MAP_CELADON_MANSION_3F
+	warp_def $1, $6, 4, GROUP_CELADON_MANSION_3F, MAP_CELADON_MANSION_3F
+	warp_def $5, $2, 1, GROUP_CELADON_MANSION_ROOF_HOUSE, MAP_CELADON_MANSION_ROOF_HOUSE
+
+	; xy triggers
+	db 0
+
+	; signposts
+	db 1
+	signpost 1, 6, $4, MapCeladonMansionRoofSignpost0Script
+
+	; people-events
+	db 1
+	person_event $3a, 9, 11, $4, $10, 255, 255, $90, 0, UnknownScript_0x71a39, $ffff
+; 0x71afb
+