WE ARE TEAM ROCKET, YOU CANNOT BEAT US

- Adds a slightly remade version of the Rocket battle theme that plays when fighting Rocket Grunts, Jessie & James, and Giovanni (1 and 2)

- Giovanni 3 and Chief now share a new battle theme composed by myself and LuciShrimp, which is a slower, more intimidating remix of the regular Rocket fight theme.

- Gave Giovanni 3 his own trainer class, allowing for better AI routines and smarter move choices.

- Removed Giovanni's name from the Viridian City Gym statues to keep his identity a further secret. It also made more sense than in vanilla.

- Gave the postgame Morimoto fight a better selection of moves.

engine/battle/core.asm

@@ -991,6 +991,11 @@ TrainerBattleVictory:
 	ld hl, wFlags_D733
 	set 1, [hl]
 .notrival
+	ld a, [wTrainerClass]
+	cp LEADER_GIOVANNI ; final battle against Giovanni
+	jr nz, .notrivalorGio
+	ld b, MUSIC_DEFEATED_GYM_LEADER
+.notrivalorGio
 	ld a, [wLinkState]
 	cp LINK_STATE_BATTLING
 	ld a, b