General QoL and small balance changes

[woisalreadytaken]

• Added vsh_block_fake_hit_sound, ported from FF2 Rewrite, which stops clientside melee hitsound desync (it doesn't do anything beside that). Requires gamedata update.
• Added the OnArenaRoundStart boss function, which is pretty self-explanatory.
• Saxton Hale's Lunge and Bonk Boy's Dash now start uncharged, to match other movement-heavy abilities, addresses Saxton Hale's lunge doesn't have initial cooldown #443.
• Pyrocar's antiheal on flamethrower hit now takes slightly longer to wear off (from 0.6 to 1 second).
• Added some basic blacklist data gathering stuff.