add delete button to all resource menus, next to unlink

Currently if you have an image, an action, uvset, material, so on. All those different types of resources you can find in a dropdown.

If you figure out you no longer want it around. You can hit the X button and it will be unlinked. It won't be deleted tho, if you open the menu again it's still there, you have to go under the orphan data tab, or resource list to delete it for good.

this can be useful sometimes, but very often you wanna get rid of something for good, since the names start conflicting. I would love to have a permanent delete button on the hotbar from the getgo. If that's scary then make a popup that asks if you're sure you want to delete.