Photos for behind the verse of the day and the "Share as image" pictures.

1. Drop landscape photos (about 1200px wide or larger, .jpg/.png/.webp) into this folder.
2. List them in index.json, for example:

   [
     { "file": "mountain-lake.jpg", "name": "Mountain lake" },
     { "file": "wheat.jpg", "name": "Wheat" }
   ]

   (A plain list of file names also works: ["mountain-lake.jpg", "wheat.jpg"].)

They then appear under "Your photos" in the background menus, and "Picture of the day" rotates through them
along with the built-in scenes. With no index.json the built-in scenes are used. Free sources: pixabay.com,
unsplash.com. Check each photo's licence before sharing pictures made from it.
