Implemented sprinting on ladders, with exported vars to enable/disable and set sprinting speed on ladder
is_sprinting will now change correctly so stamina doesn't burn whilst on the ladder for no reason
Added intent-sensitive ladder movement. Ladder movement will generally prefer "W" being up, but if the player is pointing heavily downwards, then their "W" direction is switched to downwards, and "S" is upwards.
If the player is looking downwards, and facing opposite the ladder as they enter its collider, it assumes the player is attempting to go down the ladder and snaps them on to it
Additionally, players should now be able to run perpendicular to a ladder without getting caught on it, as the player now needs to be at least somewhat facing the ladder to go up it.
More controller improvements! Addresses #84
is_sprintingwill now change correctly so stamina doesn't burn whilst on the ladder for no reason