Gym Leader Rematches!

This commit adds a large fundamental change to KEP, that being Gym Rematches.

This is achieved alongside a rework to the script that makes those post-game-gating NPCs shift around. If you add a new one, just add its constant to the lists you'll see in the Hall of Fame script.

It also fixes a few bugs:
- Fixed a bug where Cinnabar Gym loaded a fleet of Blaines. This occurred due to the way he is coded at base, and a misunderstanding I had when implementing his scaling. This is now fixed by standardising his gym script instead, while letting the gym trainers still use the old one.
- Fixed a bug where the Up-Grade NPC would not appear after beating Silph Co. 11F. However, Giovanni currently seems to have trouble with his text. This floor needs some re-coding anyway, given we need to add Jessie and James to it.

And some misc. changes:
- Changed the first Moon Stone in Mt. Moon to a Poison Stone for the Nidoking speedrunners
- Debug Mode now has a line of code to set up the post-game easily
- Changed Surge's initial battle text to Yellow's
- Added Sabrina's more accurate LGPE initial battle text, referring to the spoon she bent by accident

text/VermilionGym.asm

@@ -1,21 +1,43 @@
-_LTSurgePreBattleText::
-	text "Hey, kid! What do"
-	line "you think you're"
-	cont "doing here?"
+_LTSurgePreBattleText:: ; Yellow text, which works better with his rematch text.
+	text "Ten-hut! Welcome"
+	line "to VERMILION GYM!"
 
-	para "You won't live"
-	line "long in combat!"
-	cont "That's for sure!"
+	para "Will you look at"
+	line "that, a pint-size"
+	cont "challenger!"
 
-	para "I tell you kid,"
-	line "electric #MON"
-	cont "saved me during"
-	cont "the war!"
+	para "Hahaha! You've got"
+	line "big and brassy"
+	cont "nerves to take me"
+	cont "on with your puny"
+	cont "power!"
 
-	para "They zapped my"
-	line "enemies into"
-	cont "paralysis!"
+	para "A #MON battle"
+	line "is war! I'll show"
+	cont "you, civilian!"
 
-	para "The same as I'll"
-	line "do to you!"
+	para "I'll shock you"
+	line "into surrender!"
+	done
+
+; I usually use LGPE text, but honestly, Surge's just sucks, so I doctored it a bit.
+_SurgeRematchPreBattleText::
+	text "Hey there, kid!"
+	line "Pretty shocking"
+	cont "you made it"
+	cont "through the"
+	cont "#MON LEAGUE!"
+	
+	para "I can't think"
+	line "of a stronger"
+	cont "TRAINER I've"
+	cont "battled since"
+	cont "first arriving"
+	cont "in KANTO..."
+	
+	para "Let's have a"
+	line "rematch, eh?"
+	
+	para "I'll zap you"
+	line "into paralysis!"
 	done