feat(icons): add hourglass-cog icon (#4635)

* feat(icons): add hourglass-cog icon

* fix(icons): credit rrod497 as hourglass-cog designer

* Remove 'hourglass' icon from JSON file

Co-authored-by: Copilot Autofix powered by AI <175728472+Copilot@users.noreply.github.com>

---------

Co-authored-by: Eric Fennis <eric.fennis@gmail.com>
Co-authored-by: Copilot Autofix powered by AI <175728472+Copilot@users.noreply.github.com>

icons/hourglass-cog.json

@@ -0,0 +1,29 @@
+{
+  "$schema": "../icon.schema.json",
+  "contributors": [
+    "rrod497"
+  ],
+  "use-cases": [
+    "editing a timer or countdown",
+    "configuring session timeout",
+    "setting expiration for scheduled tasks"
+  ],
+  "tags": [
+    "timer",
+    "time",
+    "sandglass",
+    "duration",
+    "settings",
+    "gear",
+    "cog",
+    "edit",
+    "configuration",
+    "countdown",
+    "timeout",
+    "expiration"
+  ],
+  "categories": [
+    "time",
+    "tools"
+  ]
+}

icons/hourglass-cog.svg

@@ -0,0 +1,25 @@
+<svg
+  xmlns="http://www.w3.org/2000/svg"
+  width="24"
+  height="24"
+  viewBox="0 0 24 24"
+  fill="none"
+  stroke="currentColor"
+  stroke-width="2"
+  stroke-linecap="round"
+  stroke-linejoin="round"
+>
+  <path d="m14.305 19.53.923-.382" />
+  <path d="m15.228 16.852-.923-.383" />
+  <path d="m16.852 15.228-.383-.923" />
+  <path d="m16.852 20.772-.383.924" />
+  <path d="M17 2v4.172a2 2 0 0 1-.586 1.414l-8.828 8.828A2 2 0 0 0 7 17.828V22" />
+  <path d="m19.148 15.228.383-.923" />
+  <path d="m19.53 21.696-.382-.924" />
+  <path d="m20.772 16.852.924-.383" />
+  <path d="m20.772 19.148.924.383" />
+  <path d="M5 22h6.159" />
+  <path d="M5 2h14" />
+  <path d="M7 2v4.172a2 2 0 0 0 .586 1.414l5.188 5.188" />
+  <circle cx="18" cy="18" r="3" />
+</svg>