feat(icons): added metronome icon (#4063)

icons/metronome.json

@@ -0,0 +1,32 @@
+{
+  "$schema": "../icon.schema.json",
+  "contributors": [
+    "jguddas",
+    "edwloef"
+  ],
+  "tags": [
+    "metronome",
+    "tempo",
+    "rhythm",
+    "beat",
+    "bpm",
+    "music",
+    "audio",
+    "sound",
+    "practice",
+    "timing",
+    "timer",
+    "time",
+    "pulse",
+    "sync",
+    "cadence",
+    "control",
+    "playback",
+    "studio",
+    "tool"
+  ],
+  "categories": [
+    "multimedia",
+    "time"
+  ]
+}

icons/metronome.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="M12 11.4V9.1" />
+  <path d="m12 17 6.59-6.59" />
+  <path d="m15.05 5.7-.218-.691a3 3 0 0 0-5.663 0L4.418 19.695A1 1 0 0 0 5.37 21h13.253a1 1 0 0 0 .951-1.31L18.45 16.2" />
+  <circle cx="20" cy="9" r="2" />
+</svg>