Suppose 3 file types: home.html, home.css and home.js. In order to save viewstate in the explorer panel I could create a folder for each 3 files or better, 3 folders for HTML, CSS and JS files. But instead, is there a way I could consider home.html as 'a folder' to home.css and home.js so I would have something like:
+home.html
and when I click the Plus sign:
-home.html
home.css
home.js
Maybe an add-on?