* Pets now teleport to their owner when they are too far away from them
* Limited the animals that can be tamed to `QuadrupedLow` and `QuadrupedSmall` to prevent players taming overly powerful creatures before the pet feature is further developed
* Added `Pet` component used to store pet information about an entity - currently only used to store the pet's database ID
* Added `pet` database table which stores a pet's `body_id` and `name`, alongside the `character_id` that it belongs to
* Replaced `HomeChunk` component with more flexible `Anchor` component which supports anchoring entities to other entities as well as chunks.
* rename LoadoutBuilder::new to LoadoutBuilder::empty
* remove LoadoutBuilder::default as Default makes no sense here
* move comments from template.ron to EntityConfig struct
* add FIXME comments to split EntityConfig into EntityBase and
EntityExtension
