Split map scripts, text, events from main.asm

The commit we deserve

maps/Route19FuchsiaGate.asm

@@ -0,0 +1,66 @@
+Route19FuchsiaGate_MapScriptHeader: ; 0x1ab3f4
+	; trigger count
+	db 0
+
+	; callback count
+	db 0
+; 0x1ab3f6
+
+UnknownScript_0x1ab3f6: ; 0x1ab3f6
+	faceplayer
+	loadfont
+	checkbit1 $00d7
+	iftrue UnknownScript_0x1ab404
+	2writetext UnknownText_0x1ab40a
+	closetext
+	loadmovesprites
+	end
+; 0x1ab404
+
+UnknownScript_0x1ab404: ; 0x1ab404
+	2writetext UnknownText_0x1ab48a
+	closetext
+	loadmovesprites
+	end
+; 0x1ab40a
+
+UnknownText_0x1ab40a: ; 0x1ab40a
+	db $0, "CINNABAR's volcano", $4f
+	db "erupted.", $51
+	db "It hurled boulders", $4f
+	db "that cut off ROUTE", $55
+	db "19 indefinitely.", $51
+	db "I wonder if the", $4f
+	db "people of CINNABAR", $55
+	db "are safe…", $57
+; 0x1ab48a
+
+UnknownText_0x1ab48a: ; 0x1ab48a
+	db $0, "No CINNABAR citi-", $4f
+	db "zens were injured", $51
+	db "by the eruption.", $4f
+	db "That's great!", $57
+; 0x1ab4cd
+
+Route19FuchsiaGate_MapEventHeader: ; 0x1ab4cd
+	; filler
+	db 0, 0
+
+	; warps
+	db 4
+	warp_def $0, $4, 10, GROUP_FUCHSIA_CITY, MAP_FUCHSIA_CITY
+	warp_def $0, $5, 11, GROUP_FUCHSIA_CITY, MAP_FUCHSIA_CITY
+	warp_def $7, $4, 1, GROUP_ROUTE_19, MAP_ROUTE_19
+	warp_def $7, $5, 1, GROUP_ROUTE_19, MAP_ROUTE_19
+
+	; xy triggers
+	db 0
+
+	; signposts
+	db 0
+
+	; people-events
+	db 1
+	person_event $43, 8, 4, $9, $0, 255, 255, $90, 0, UnknownScript_0x1ab3f6, $ffff
+; 0x1ab4f4
+