Adds stamp icon (#962)

icons/stamp.json

@@ -0,0 +1,16 @@
+{
+  "$schema": "../icon.schema.json",
+  "tags": [
+    "mark",
+    "print",
+    "clone",
+    "loyalty",
+    "library"
+  ],
+  "categories": [
+    "design",
+    "cursors",
+    "tools",
+    "maps"
+  ]
+}

icons/stamp.svg

@@ -0,0 +1,15 @@
+<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="M5 22h14" />
+  <path d="M19.27 13.73A2.5 2.5 0 0 0 17.5 13h-11A2.5 2.5 0 0 0 4 15.5V17a1 1 0 0 0 1 1h14a1 1 0 0 0 1-1v-1.5c0-.66-.26-1.3-.73-1.77Z" />
+  <path d="M14 13V8.5C14 7 15 7 15 5a3 3 0 0 0-3-3c-1.66 0-3 1-3 3s1 2 1 3.5V13" />
+</svg>