Add traffic-cone icon

icons/traffic-cone.json

@@ -0,0 +1,15 @@
+{
+  "$schema": "../icon.schema.json",
+  "contributors": [
+    "danielbayley"
+  ],
+  "tags": [
+    "roadworks",
+    "tarmac",
+    "safety",
+    "block"
+  ],
+  "categories": [
+    "transportation"
+  ]
+}

icons/traffic-cone.svg

@@ -0,0 +1,16 @@
+<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="M8.5 8h7" />
+  <path d="M7 13h10" />
+  <path d="M19 18s-3.1-8.8-5.1-14.7a2.1 2.1 0 0 0-3.8 0C8.1 9.2 5 18 5 18" />
+  <rect width="20" height="4" x="2" y="18" rx="1" />
+</svg>