feat(icons): add dumbpad (#1062)

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

tree.json

@@ -450,6 +450,7 @@
         "duckdns-light.png",
         "duckdns.png",
         "duckduckgo.png",
+        "dumbpad.png",
         "duo.png",
         "duplicacy.png",
         "duplicati.png",
@@ -2508,6 +2509,7 @@
         "duckdns-light.svg",
         "duckdns.svg",
         "duckduckgo.svg",
+        "dumbpad.svg",
         "duo.svg",
         "duplicati.svg",
         "easy-gate-light.svg",
@@ -4353,6 +4355,7 @@
         "duckdns-light.webp",
         "duckdns.webp",
         "duckduckgo.webp",
+        "dumbpad.webp",
         "duo.webp",
         "duplicacy.webp",
         "duplicati.webp",