Now they can say something:
-When their last Pokémon's HP is between 25% and 50%.
-When a critical hit is dealt to their first Pokémon for the first time.
-When a super effective hit is dealt to their first Pokémon for the first time.
-When a STAB move is used against (but doesn't faint) the opponent's Pokémon.
-When the Player's Pokémon's move doesn't affect the opponent's Pokémon.
-When they're about to trigger a Mega Evolution.
-When they're about to trigger a Z-Move.

Misc. changes:
-Split GetEnemyMonCount for readability's sake.
-Optimized the size allocated to trainerSlideLowHpMsgDone.

…expansion into trainerSlideMsgUpdate

…expansion into trainerSlideMsgUpdate

…expansion into trainerSlideMsgUpdate

Now a trainer NPC can also say something before the first turn of a battle starts for good.

…expansion into trainerSlideMsgUpdate

-Undeclared size for certain trainer slide-in variables at struct BattleStruct for reasons.
-Added a BattlerHPPercentage function to make HP threshold checks in ShouldDoTrainerSlide a bit more readable.

…expansion into trainerSlideMsgUpdate