Added the player to the preview!

Hello again - this time I’ve got a bigger feature for you:

I have

• added the player body, their clothes, hair, and alternative hair style to the preview

It was quite a bit of work to restructure the preview itself to get all of the layers in their correct spot. Hope it helps debugging your sprites :)

and also a few other changes:

• shortcuts now work with closed tool panels (pause/play, skip frame etc.)
• added more hint texts
• change cursor shape to fit interactions better