Transform rotation is opposite of Sway

[tv42]

I've been moving over from Sway, and noticed a funny difference that may hit others: niri's output "..." { transform "90" } is counter-clockwise, Sway's is clockwise: https://github.com/swaywm/sway/wiki#display-rotation

If this is something you don't hold a strong opinion on, it might be easier to go with what others are doing -- that part of my config was otherwise a copy-paste and mechanical transform, except for the laugh I got from having an upside-down portrait monitor.

System Information

• niri version: 0.1.6

[YaLTeR]

I had considered this at the time of implementing the option: #137 (comment) There's no "standard" among popular compositors, so I went with the less annoying way code-wise.