Iridescent Ball fix build 1.0.34

Item ID:
  pokeisles_foods:iridescent_ball

Catch-rate behavior is now applied through Cobblemon's PokemonCatchRateEvent:
  x1 when not daytime
  x4 during daytime
  x8 during daytime while raining

The PokeBall object's own catch-rate modifier is intentionally x1 to avoid double multiplying.
The event hook does the actual multiplier.

Successful captures still have a 1% chance to turn the caught Pokémon shiny.
Already-shiny Pokémon are left unchanged.

Inventory texture now points directly to:
  assets/pokeisles_foods/textures/item/iridescent_ball.png

That file is copied from the supplied Iridescentballicon.png.
