feat(icons): add watchlistarr (#1245)

Co-authored-by: Dashboard Icons Manager <193821040+dashboard-icons-manager[bot]@users.noreply.github.com>

tree.json

@@ -2094,6 +2094,7 @@
         "watcharr-light.png",
         "watcharr.png",
         "watcher.png",
+        "watchlistarr.png",
         "watchtower.png",
         "watchyourlan.png",
         "watchyourports.png",
@@ -6109,6 +6110,7 @@
         "watcharr-light.webp",
         "watcharr.webp",
         "watcher.webp",
+        "watchlistarr.webp",
         "watchtower.webp",
         "watchyourlan.webp",
         "watchyourports.webp",