Add ability to macro Ride Pinion

[Rongway]

Can we please have a text command for /ridepillion <seat.4> or some means of indicating what seat? Or also /ridepillion <firstopen> to grab the first numerically open seat.

I'd recommend just

/ridepillion

to default to the first open seat and

/ridepillion 4

to specify seat 4. This would avoid the need for people to learn a set of placeholder tags just for this.