[Feature Request] Ability to set which side tabs are listed on

[JLeybovichLFL]

Right now tabs are always listed from left to right on the top of the canvas. It would be nice to have the ability to have tabs listed on the side and set which corner they start from.

[yasirkula]

This is a cool feature but its implementation will be a tedious task. At the moment, I'm not planning to implement this.