[Cobblemon] Fai's Mythical Monstrosities

✨ Update Summary

This update focuses on battle system compatibility and visual fixes, along with a few block improvements.

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🌙 Lunar System

• Fixed Lunar Moons rendering incorrectly when shaders are enabled
• Moons now render properly with shader packs without visual glitches

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⚔️ Battle / Showdown Integration

• Added proper support for custom Showdown conditions
• Added Showdown item support
• Implemented compatibility with the Mega Showdown mod
• Improved internal condition handling for better battle stability

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🧱 Blocks

• Fixed several block behavior and placement issues
• Minor improvements to block interactions and consistency

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🛠 Misc

• General cleanup and backend improvements