Adds a list of new attributes for entities and players. These attributes allow mod compatibility and serve as an API for mods that make use of them. ## Current Attributes - `WATER_SPEED` (living entities): Controls the speed of the player when in water. - `LAVA_SPEED` (living entities): Controls the player's speed when in lava. - `LUNG_CAPACITY` (living entities): Extra air when underwater / suffocating - `JUMP_HEIGHT` (living entities): Controls the jump height of the player. - ...