Include boat types to `EntityTag.color`

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Include boat types to EntityTag.color and deprecate EntityTag.boat_type for 1.19+

Changes:

• Adds a slow deprecation on versions 1.19+ for the EntityTag.boat_type mechanism
• Update EntityTag.boat_type to new property format
• Update EntityTag.color to new property format
• Add new boat API support to EnityTag.color for versions 1.19+

Tested on versions 1.17 - 1.20

Requested by Udnek

Update boat_type for 1.19 and 1.20

Updates the boat_type mechanism to use the new Spigot API for 1.19 and 1.20. Also updates to the new Property registration.

Note: I tried using if checks for the different versions but when I tested on 1.18 it did not like when Boat.Type.class was present anywhere so I decided to put it into the NMS entity helper. I tried messing with the if checks to see what will work but couldn't figure anything out. Let me know if there is a way to do it without needing to add functions to the helper :)

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Updated everything. Ready for review.

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Done

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Should be done.

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Done