Split map scripts, text, events from main.asm

The commit we deserve

maps/Route6SaffronGate.asm

@@ -0,0 +1,78 @@
+Route6SaffronGate_MapScriptHeader: ; 0x1926e3
+	; trigger count
+	db 1
+
+	; triggers
+	dw UnknownScript_0x1926e9, $0000
+
+	; callback count
+	db 0
+; 0x1926e9
+
+UnknownScript_0x1926e9: ; 0x1926e9
+	end
+; 0x1926ea
+
+UnknownScript_0x1926ea: ; 0x1926ea
+	faceplayer
+	loadfont
+	checkbit1 $00c9
+	iftrue UnknownScript_0x1926f8
+	2writetext UnknownText_0x1926fe
+	closetext
+	loadmovesprites
+	end
+; 0x1926f8
+
+UnknownScript_0x1926f8: ; 0x1926f8
+	2writetext UnknownText_0x1927cb
+	closetext
+	loadmovesprites
+	end
+; 0x1926fe
+
+UnknownText_0x1926fe: ; 0x1926fe
+	db $0, "Welcome to SAFFRON", $4f
+	db "CITY, home of the", $55
+	db "MAGNET TRAIN!", $51
+	db "…That's what I'd", $4f
+	db "normally say, but", $51
+	db "the MAGNET TRAIN", $4f
+	db "isn't running now.", $51
+	db "It's not getting", $4f
+	db "any electricity", $51
+	db "because there's", $4f
+	db "something wrong", $51
+	db "with the POWER", $4f
+	db "PLANT.", $57
+; 0x1927cb
+
+UnknownText_0x1927cb: ; 0x1927cb
+	db $0, "The MAGNET TRAIN", $4f
+	db "is the most famous", $51
+	db "thing about SAF-", $4f
+	db "FRON.", $57
+; 0x192807
+
+Route6SaffronGate_MapEventHeader: ; 0x192807
+	; filler
+	db 0, 0
+
+	; warps
+	db 4
+	warp_def $0, $4, 12, GROUP_SAFFRON_CITY, MAP_SAFFRON_CITY
+	warp_def $0, $5, 13, GROUP_SAFFRON_CITY, MAP_SAFFRON_CITY
+	warp_def $7, $4, 2, GROUP_ROUTE_6, MAP_ROUTE_6
+	warp_def $7, $5, 2, GROUP_ROUTE_6, MAP_ROUTE_6
+
+	; xy triggers
+	db 0
+
+	; signposts
+	db 0
+
+	; people-events
+	db 1
+	person_event $43, 8, 4, $9, $0, 255, 255, $90, 0, UnknownScript_0x1926ea, $ffff
+; 0x19282e
+