Move 'map attributes' into 'layouts'

data/layouts/SlateportCity_OceanicMuseum_1F/layout.inc

@@ -0,0 +1,16 @@
+	.align 2
+SlateportCity_OceanicMuseum_1F_MapBorder::
+	.incbin "data/layouts/SlateportCity_OceanicMuseum_1F/border.bin"
+
+	.align 2
+SlateportCity_OceanicMuseum_1F_MapBlockdata::
+	.incbin "data/layouts/SlateportCity_OceanicMuseum_1F/map.bin"
+
+	.align 2
+SlateportCity_OceanicMuseum_1F_Layout::
+	.4byte 0x14
+	.4byte 0x9
+	.4byte SlateportCity_OceanicMuseum_1F_MapBorder
+	.4byte SlateportCity_OceanicMuseum_1F_MapBlockdata
+	.4byte gTileset_Building
+	.4byte gTileset_OceanicMuseum

data/layouts/SlateportCity_OceanicMuseum_1F/map.bin

@@ -0,0 +1,2 @@
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