Adding trained birds to fantasy modpack.

[MistakeNot4892]

Depends on #5132.

Description of changes

• Adds pigeons, which can be given a piece of paper or tiny item, and used in-hand to return to their hutch.
• Adds hawks, which can be directed to fetch an item or attack a mob.
• Adds crows, which can be told a player name and given a piece of paper or tiny item to deliver.

Why and what will this PR improve

New communication methods/functionality for the fantasy modpack.

Authorship

Code is mine.
Icons kindly made by @PlayerDeer.

Changelog

🆑
add: Added trained birds to fantasy modpack.
/:cl:

TODO

• Perched icon for birds
• Implement pigeon returning behavior.
• Add crow and pigeon message/small item carrying behavior.
• Implement hawk item fetching behavior.
• Implement hawk hunting behavior.
• Get hawk grabs to work.
• Clean up hawk deployment to remove lengthy pauses before processing starts.
• Implement crow target/message passing behavior.

[MistakeNot4892]

Calling this good enough for an initial PR - they're admin spawn only anyway.

[MistakeNot4892]

No idea why, but this keeps preventing compilation.