move pokemon graphics to mon-specific directories

graphics/pokemon/seviper/normal.pal

@@ -0,0 +1,19 @@
+JASC-PAL
+0100
+16
+148 197 197
+255 255 255
+57 49 49
+255 230 90
+222 189 65
+139 41 180
+255 189 172
+238 90 82
+205 65 57
+131 123 65
+41 32 32
+139 123 123
+82 74 74
+0 0 0
+164 49 255
+90 49 65

graphics/pokemon/seviper/shiny.pal

@@ -0,0 +1,19 @@
+JASC-PAL
+0100
+16
+148 197 197
+255 255 255
+57 49 49
+205 255 115
+172 222 82
+180 49 106
+255 189 172
+90 131 180
+57 90 139
+82 123 16
+41 32 32
+139 123 123
+82 74 74
+0 0 0
+213 82 139
+90 49 65