Kanto tileset and block upgrades

- Bollards from Yellow
- Roof tiles from Yellow and Blue
- Trees and Signs from Green, Blue, and Yellow
- Improved roof shading
- Japanese PC Pokecenter Icon in Kanto tileset
- Oaks RBY lab design
- Some small amount of usage of new sign tiles in some Kanto maps
- Pewter City Museum roof finally doesn't have a crack in it
- also a fix for some messed up collision in silent hills lol

data/tilesets/kanto_collision.asm

@@ -127,3 +127,18 @@
 	tilecoll WALL, WALL, WALL, WALL ; 7e
 	tilecoll WALL, WALL, WALL, WALL ; 7f
 	tilecoll WALL, WALL, DOOR, WALL ; 80
+	tilecoll WALL, WALL, WALL, WALL ; 81
+	tilecoll WALL, WALL, WALL, WALL ; 82
+	tilecoll WALL, WALL, WALL, WALL ; 83
+	tilecoll WALL, WALL, WALL, WALL ; 84
+	tilecoll WALL, WALL, WALL, WALL ; 85
+	tilecoll WALL, WALL, WALL, WALL ; 86
+	tilecoll WALL, WALL, WALL, WALL ; 87
+	tilecoll FLOOR, FLOOR, WALL, WALL ; 88
+	tilecoll FLOOR, FLOOR, FLOOR, WALL ; 89
+	tilecoll FLOOR, FLOOR, FLOOR, WALL ; 8a
+	tilecoll FLOOR, FLOOR, FLOOR, WALL ; 8b
+	tilecoll WALL, WALL, WALL, WALL ; 8c
+	tilecoll WALL, WALL, WALL, WALL ; 8d
+	tilecoll WALL, WALL, WALL, WALL ; 8e
+	tilecoll FLOOR, FLOOR, WALL, WALL ; 8f