This adds a new subpanel to the geometry nodes modifier which is just used to display information about used attributes.
* A new panel is used because adding this information anywhere else clutters the ui too much imo.
* The general layout is similar to that in the tooltip. I found it to be more trouble than it's worth to share this code.
I wonder if the new panel should have a `poll` function so that it only shows when named attributes are used.
Also see rBc71013082d096968d33ba977a0fdbcfbfb0690d1.
{F13012158}
{F13012159}