Merge pull request #248301 from NobbZ/scrot-meta-main

pkgs/tools/graphics/scrot/default.nix

···
   meta = with lib; {
     homepage = "https://github.com/resurrecting-open-source-projects/scrot";
     description = "A command-line screen capture utility";
+    mainProgram = "scrot";
     platforms = platforms.linux;
     maintainers = with maintainers; [ globin ];
     license = licenses.mitAdvertising;