move pokemon graphics to mon-specific directories

graphics/pokemon/mightyena/normal.pal

@@ -0,0 +1,19 @@
+JASC-PAL
+0100
+16
+57 164 164
+0 0 0
+0 0 0
+172 172 180
+148 139 156
+74 82 106
+49 49 65
+32 32 41
+222 230 238
+197 205 213
+255 197 90
+172 123 90
+222 57 57
+164 16 16
+255 255 255
+0 0 0

graphics/pokemon/mightyena/shiny.pal

@@ -0,0 +1,19 @@
+JASC-PAL
+0100
+16
+57 164 164
+0 0 0
+0 0 0
+255 205 106
+213 172 74
+164 123 82
+131 90 57
+98 57 16
+255 238 172
+255 222 123
+255 255 255
+172 123 90
+74 98 172
+49 57 115
+255 255 255
+0 0 0