Main changes:

• Updated growth with a particle spawn + sound, should make it much easier to understand when a child grows up.
• Updated feeding logic with fallback to Idle state, animals should no longer get stuck waiting for food.
• Updated custodianship registration particles. Animals which are fed when not a custodian of them will show a heart when you become a custodian, and a block-break particle set when you do not become one.
• Added breeding state + breeding functionality. Animals can now be fed by a custodian, and if they have not bred recently, will begin their breeding behaviour.