Split "rideable" into "rideable" and "controllable"

[4P5]

Is your feature request related to a problem?

Currently riding a mob and piloting a mob are under the same setting; ridable: true. I'd like to let players ride mobs like phantoms and dragons, but not to control them, to add some unique combat.

(While we're on the topic of hostile mobs, perhaps a "damage-amount" and "damage-rate" option for riding them? Defaults to 0/0, but would stop players from just riding a wither for an hour, with something like 2/1)

Describe the solution you'd like.

For the default config, something like rideable: false, with the additional of controllable, which defaults to true (for compatibility), and is dependant on rideable. This won't break any previous versions, but admins can then disable the control feature and only enable riding.

[BillyGalbreath]

Implemented in build 1519

bd0a85a