Add menu-square icon (#1181)

* Add `menu` alternate icon

* Rename `menu-2` to `menu-square`

icons/menu-square.json

@@ -0,0 +1,15 @@
+{
+  "$schema": "../icon.schema.json",
+  "tags": [
+    "bars",
+    "navigation",
+    "hamburger",
+    "options",
+    "menu bar",
+    "panel"
+  ],
+  "categories": [
+    "layout",
+    "account"
+  ]
+}

icons/menu-square.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"
+>
+  <rect width="18" height="18" x="3" y="3" rx="2" />
+  <path d="M7 8h10" />
+  <path d="M7 12h10" />
+  <path d="M7 16h10" />
+</svg>