CobbleGacha Expanded Alpha 3.7.15

IMPORTANT: This release changes the ACTUAL gacha/wishing system animation, not the Wish item icon.

Screen animation changes:
- SHAKING / charge: large animated cosmic teleport/summoning ring around the Pokeball.
- Charge particles move inward toward the machine.
- FLASH: rarity-colored vertical light pillar, expanding rings, screen flash and star spokes.
- Higher rarity pulls keep a longer, more dramatic flash.
- REVEAL: outward rarity/spark particles around the result card without covering the center.
- Adds assets/cobbleserverutils/textures/gui/gacha_portal_ring.png.
- Replaces Phase3AnimationHooks.class; this is the class already called by GachaScreen during SHAKING, FLASH and REVEAL.
- Keeps all 3.7.14 item icon/model changes.
