Groundwork for Viridian Pre-Gym

This map is fully functional but has a lot of bits to iron out, as well as a need for Gym Trainers. I'm also not wholly satisfied with Yujirou's team; maybe remove Eevee?

Yes, I designed an entire tileset for this. Fear me. Bow before me. Actually, don't, this was beyond rational thought.

Current issues;
- Yujirou's sprite doesn't work properly.
- Needs Gym Trainers (hell)
- Yujirou needs an event for being beaten, the refight, and more.

constants/map_constants.asm

@@ -89,7 +89,7 @@ DEF FIRST_INDOOR_MAP EQU const_value
 	mapconst BIKE_SHOP,                      4,  4 ; $43
 	mapconst CERULEAN_MART,                  4,  4 ; $44
 	mapconst MT_MOON_POKECENTER,             4,  7 ; $45
-	mapconst CERULEAN_TRASHED_HOUSE_COPY,    4,  4 ; $46	- Unused
+	mapconst VIRIDIAN_PRE_GYM,			     7,  5 ; $46	- was CERULEAN_TRASHED_HOUSE_COPY
 	mapconst ROUTE_5_GATE,                   3,  4 ; $47
 	mapconst UNDERGROUND_PATH_ROUTE_5,       4,  4 ; $48
 	mapconst DAYCARE,                        4,  4 ; $49

constants/tileset_constants.asm

@@ -25,4 +25,5 @@
 	const CLUB         ; 21
 	const FACILITY     ; 22
 	const PLATEAU      ; 23
+	const PREGYM	   ; 24
 DEF NUM_TILESETS EQU const_value

constants/trainer_constants.asm

@@ -27,7 +27,7 @@ ENDM
 	trainer_const BIKER          ; $0A
 	trainer_const BURGLAR        ; $0B
 	trainer_const ENGINEER       ; $0C
-	trainer_const UNUSED_JUGGLER ; $0D
+	trainer_const YUJIROU 		 ; $0D, was unused juggler
 	trainer_const FISHER         ; $0E
 	trainer_const SWIMMER        ; $0F
 	trainer_const CUE_BALL       ; $10