Connect Bake Node settings and button to Group Input so they appear in modifier settings

There doesn't seem to be an option to modify the bake node settings or click the bake button outside of the geometry nodes panel. This would be helpful for more complex reusable modifiers.

The goal when I use geometry nodes is to make it all easily reusable with all settings needed in the panel, so I don't have to go looking through my node tree after it is finished. This requires opening the node tree and wouldn't work with linked assets requiring appending.