feat(icons): add retrom (#1150)

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

tree.json

@@ -1640,6 +1640,7 @@
         "resiliosync.png",
         "restic.png",
         "restreamer.png",
+        "retrom.png",
         "revolt-light.png",
         "revolt.png",
         "rhasspy-dark.png",
@@ -3542,6 +3543,7 @@
         "resiliosync-full.svg",
         "resiliosync.svg",
         "restreamer.svg",
+        "retrom.svg",
         "revolt-light.svg",
         "revolt.svg",
         "rhasspy-dark.svg",
@@ -5604,6 +5606,7 @@
         "resiliosync.webp",
         "restic.webp",
         "restreamer.webp",
+        "retrom.webp",
         "revolt-light.webp",
         "revolt.webp",
         "rhasspy-dark.webp",