Thanks. However, in Brave, when I link to the settings are, to Manage Extensions, to Add extensions all I can get to is the Chrome “store” with no Brave option to go anywhere else to get an extension. I did download the extension offered, but can’t find a Brave function that will just let me go to my downloads to get/install it.
Just for the heck of it I decided to try the other extension offered by cynwoody, the fr_tree_viewer and low and behold it also doesn't have that META-INF folder that I believe is only for Firefox, but it works!
So I'm going to compare the manifest.json files from both folders and see what I can from there.
By the way, the tree viewer is pretty cool too.