move pokemon graphics to mon-specific directories

graphics/pokemon/registeel/normal.pal

@@ -0,0 +1,19 @@
+JASC-PAL
+0100
+16
+148 197 98
+90 82 82
+131 131 123
+189 189 180
+222 213 230
+238 238 238
+115 115 90
+139 131 106
+172 172 123
+0 0 0
+0 0 0
+255 255 255
+213 106 131
+255 180 164
+246 90 172
+24 24 24

graphics/pokemon/registeel/shiny.pal

@@ -0,0 +1,19 @@
+JASC-PAL
+0100
+16
+148 197 98
+90 82 82
+90 123 106
+115 180 164
+172 222 197
+213 238 238
+115 115 90
+139 131 106
+172 172 123
+0 0 0
+0 0 0
+255 255 255
+180 65 49
+255 123 82
+222 98 49
+24 24 24