Redo Bug Bite

[ghoulslash]

Redid Bug Bite to handle #2027

• It does not temporarily change items anymore
• Fixes issue where bug bite was not activating if it fainted the target
• Save original gBattlerTarget through the move effect to fix tryfaintmon BS_TARGET following the effect
• Jaboca/etc berries still need to be activated prior to bug bite stealing them, but that should be saved for another PR
• Adds Lansat Berry
• GetBattlerItemHoldEffect has been added to get the proper hold effect for the bug bite target rather than using the attacker's

[BuffelSaft]

Berry Effects Tested:

• HOLD_EFFECT_RESTORE_HP
• HOLD_EFFECT_RESTORE_PP Failed: Does not restore PP.
• HOLD_EFFECT_CURE_FRZ: N/A
• HOLD_EFFECT_CURE_BRN
• HOLD_EFFECT_CURE_PSN
• HOLD_EFFECT_CURE_SLP: tested via sleep talk
• HOLD_EFFECT_CURE_PAR
• HOLD_EFFECT_CURE_CONFUSION
• HOLD_EFFECT_CURE_STATUS
• HOLD_EFFECT_RESTORE_PCT_HP
• HOLD_EFFECT_CONFUSE_SPICY Quiet attacker, not confused by stolen berry
• HOLD_EFFECT_CONFUSE_DRY
• HOLD_EFFECT_CONFUSE_SWEET Quiet attacker, confused by stolen berry
• HOLD_EFFECT_CONFUSE_BITTER
• HOLD_EFFECT_CONFUSE_SOUR
• HOLD_EFFECT_RESIST_BERRY Eaten before it can be stolen (correct behaviour)
• HOLD_EFFECT_ATTACK_UP
• HOLD_EFFECT_DEFENSE_UP
• HOLD_EFFECT_SPEED_UP
• HOLD_EFFECT_SP_ATTACK_UP
• HOLD_EFFECT_SP_DEFENSE_UP
• HOLD_EFFECT_CRITICAL_UP
• HOLD_EFFECT_RANDOM_STAT_UP Note: raises stat even if battle will end
• HOLD_EFFECT_MICLE_BERRY Note: raises stat even if battle will end
• HOLD_EFFECT_CUSTAP_BERRY

Not implemented yet, so not expected to work:

• HOLD_EFFECT_JABOCA_BERRY
• HOLD_EFFECT_ROWAP_BERRY
• HOLD_EFFECT_KEE_BERRY
• HOLD_EFFECT_MARANGA_BERRY
• HOLD_EFFECT_ENIGMA_BERRY

Other:

• Berry not eaten when target is behind Substitute
• Attacker's item not destroyed when stolen berry effect activates

There are a couple of issues with Bug Bite, but none of them are issues with this PR; just some missing functionality. Will merge this and raise an issue for them.