Open the Battle Tower and add the badges' type boosts (Closes #32)

The Route 40 gate, the Battle Tower and its rooms are open with the
offline challenge: the rules, the save before entering, the level menu
with its level and uber checks, seven trainers drawn from
BattleTowerTrainers with Pokémon from BattleTowerMons, BattleTowerText,
save and quit with the receptionist resuming it, cancelling, losing and
the vitamin reward. After each battle the party and Pokédex return to the
quick save's, as LoadPokemonData does.

Battle Tower battles turn off obedience, badge boosts, experience, items,
AI items and prize money, use Falkner's AI attributes, keep Sleep to one
to three turns and never fail the AI's status moves at random. New script
command battletowertext; new specials BattleTowerAction (offline actions),
BattleTowerRoomMenu, CheckForBattleTowerRules, BattleTowerBattle,
LoadOpponentTrainerAndPokemonWithOTSprite, Menu_ChallengeExplanationCancel,
TryQuickSave and Reset.

DoBadgeTypeBoosts was missing from every battle; it now adds an eighth of
the damage for the first badge matching the move's type on the player's
turn, checked against the original routine.

This completes Johto from Azalea to Blackthorn: Kanto, the League and the
S.S. Aqua continue on #33; radio, rematches and Buena's password on #30.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

README.md

@@ -30,7 +30,9 @@ Team Rocket then takes over Goldenrod's Radio Tower. Fight up to the fake direct
 
 Routes 45 and 46 lead south from Blackthorn back to Route 29. In Ecruteak, the Clear Bell convinces the sages to let you into Tin Tower, where Suicune puts you to the test. After the League, Tin Tower's upper floors lead to Ho-Oh, and the Whirl Islands hide Lugia for a trainer with the Silver Wing.
 
-The Battle Tower, Kanto, the League, the Battle Tower and Whirl Islands, the Day-Care's Eggs, trade evolutions, the Pokégear's radio, the Pokédex's area view, search and other list modes, and audio are still being ported. Unported neighboring areas appear at the edges but cannot be entered yet.
+On Route 40, the Battle Tower takes a party of three different Pokémon holding different items into a Battle Room of the level you choose, against seven trainers in a row. Win them all for five of a random vitamin. Between battles you can save and quit, and the receptionist picks up where you left off.
+
+Kanto, the League, the Battle Tower and Whirl Islands, the Day-Care's Eggs, trade evolutions, the Pokégear's radio, the Pokédex's area view, search and other list modes, and audio are still being ported. Unported neighboring areas appear at the edges but cannot be entered yet.
 
 ## Run