Best friends are now rideable! Right click with an empty hand. Large refactor of how MobEntity avoids targeting players when friendship > 0.

Reduced # of waypoints to 6 to 20. moveToTarget() every call to tick(). Add particles for debugging LEAD behavior. Switched back to FuzzyTargeting for finding valid positions.

Updated discord.gg links in error messages with discord.creaturechat.com. Output clickable error message to chat (for ease of use) to player that got error.

- Made a generic enum to ask for specific random phrases
- Inject new random frequency term + random adjective when generating a new character, to give more randomness to the model.

Adding new mixin to dynamically affect how the canTarget method works on LivingEntities. This prevents them from targeting any Player users if the friendship score > 0. Also changed behavior of Follow to pause when they are near the player, allowing other goals to run.

 when sending chunked lite JSON data to new player on server (i.e. someone reconnects or logins in).