feat(icons): add threadfin (#1189)

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

tree.json

@@ -1919,6 +1919,7 @@
         "themepark.png",
         "theodinproject.png",
         "thingsboard.png",
+        "threadfin.png",
         "threads-light.png",
         "threads.png",
         "thunderbird.png",
@@ -3762,6 +3763,7 @@
         "thelounge.svg",
         "theodinproject.svg",
         "thingsboard.svg",
+        "threadfin.svg",
         "threads-light.svg",
         "threads.svg",
         "thunderbird.svg",
@@ -5911,6 +5913,7 @@
         "themepark.webp",
         "theodinproject.webp",
         "thingsboard.webp",
+        "threadfin.webp",
         "threads-light.webp",
         "threads.webp",
         "thunderbird.webp",