Add sparkle icon (#1220)

Co-authored-by: Karsa <contact@karsa.org>

icons/sparkle.json

@@ -0,0 +1,17 @@
+{
+  "$schema": "../icon.schema.json",
+  "tags": [
+    "star",
+    "effect",
+    "filter",
+    "night",
+    "magic",
+    "shiny",
+    "glitter",
+    "twinkle",
+    "celebration"
+  ],
+  "categories": [
+    "shapes"
+  ]
+}

icons/sparkle.svg

@@ -0,0 +1,13 @@
+<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="m12 3-1.9 5.8a2 2 0 0 1-1.287 1.288L3 12l5.8 1.9a2 2 0 0 1 1.288 1.287L12 21l1.9-5.8a2 2 0 0 1 1.287-1.288L21 12l-5.8-1.9a2 2 0 0 1-1.288-1.287Z" />
+</svg>