add template

src/assets/demo/images/product/product-placeholder.svg

@@ -0,0 +1,10 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<svg width="300px" height="200px" viewBox="0 0 300 200" version="1.1" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink">
+    <title>Artboard</title>
+    <g id="Artboard" stroke="none" stroke-width="1" fill="none" fill-rule="evenodd">
+        <rect id="Rectangle" fill="#F8F9FA" x="0" y="0" width="300" height="200"></rect>
+        <g id="image" transform="translate(110.000000, 70.000000)" fill="#BABABC" fill-rule="nonzero">
+            <path d="M75,0 L5,0 C2.23857625,0 0,2.23857625 0,5 L0,55 C0,57.7614237 2.23857625,60 5,60 L75,60 C77.7614237,60 80,57.7614237 80,55 L80,5 C80,2.23857625 77.7614237,0 75,0 Z M20,10 C25.5228475,10 30,14.4771525 30,20 C30,25.5228475 25.5228475,30 20,30 C14.4771525,30 10,25.5228475 10,20 C10,14.4771525 14.4771525,10 20,10 Z M70,40 L70,50 L10,50 L10,40 L18.55,35.7 C19.4648753,35.2524957 20.5351247,35.2524957 21.45,35.7 L30,40 L53.65,21.1 C54.4866298,20.4991452 55.6133702,20.4991452 56.45,21.1 L70,30 L70,40 Z" id="Shape"></path>
+        </g>
+    </g>
+</svg>