Move 'map attributes' into 'layouts'

data/layouts/GraniteCave_1F/border.bin

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+

data/layouts/GraniteCave_1F/layout.inc

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+	.align 2
+GraniteCave_1F_MapBorder::
+	.incbin "data/layouts/GraniteCave_1F/border.bin"
+
+	.align 2
+GraniteCave_1F_MapBlockdata::
+	.incbin "data/layouts/GraniteCave_1F/map.bin"
+
+	.align 2
+GraniteCave_1F_Layout::
+	.4byte 0x2a
+	.4byte 0xf
+	.4byte GraniteCave_1F_MapBorder
+	.4byte GraniteCave_1F_MapBlockdata
+	.4byte gTileset_General
+	.4byte gTileset_Cave

data/layouts/GraniteCave_1F/map.bin

@@ -0,0 +1,5 @@
+22222222222222222222222?22''2222222222222222222222222222222 			"22222222222222222
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22222222222
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222222226
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+
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22222222222J6R6F6
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2	$#	
+
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22<22222222;62;6
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2#
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2#	XYZ		"222;62;6
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2		 			"#				
+
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2#	"#	"2;2;6
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2#			"
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2#						"#							$'#	XYZ$$#												$#									$