feat(icons): added grid-3x2 icon (#3216)

* Added icons/grid-3x2.svg

* Added icons/grid-3x2.json

* Update grid-3x2.json

---------

Co-authored-by: Eric Fennis <eric.fennis@gmail.com>

icons/grid-3x2.json

@@ -0,0 +1,30 @@
+{
+  "$schema": "../icon.schema.json",
+  "contributors": [
+    "qubrat"
+  ],
+  "tags": [
+    "table",
+    "rows",
+    "columns",
+    "blocks",
+    "plot",
+    "land",
+    "geometry",
+    "measure",
+    "size",
+    "width",
+    "height",
+    "distance",
+    "surface area",
+    "square meter",
+    "acre",
+    "window"
+  ],
+  "categories": [
+    "text",
+    "math",
+    "layout",
+    "design"
+  ]
+}

icons/grid-3x2.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="M15 3v18" />
+  <path d="M3 12h18" />
+  <path d="M9 3v18" />
+  <rect x="3" y="3" width="18" height="18" rx="2" />
+</svg>