Add Web Blender favicon

web/app/index.html

@@ -4,6 +4,7 @@
     <meta charset="UTF-8" />
     <meta name="viewport" content="width=device-width, initial-scale=1.0" />
     <meta name="theme-color" content="#202124" />
+    <link rel="icon" href="/favicon.svg" type="image/svg+xml" />
     <title>Web Blender Modeler V1</title>
     <link rel="preload" as="fetch" type="application/wasm" crossorigin href="/vendor/blender/single/web_engine.wasm" />
     <link rel="stylesheet" href="/src/app/app-shell.css" />

web/app/public/favicon.svg

@@ -0,0 +1,5 @@
+<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 64 64">
+  <rect width="64" height="64" rx="8" fill="#202124"/>
+  <path d="M10 35 28 17h18l8 8-18 22H18z" fill="#f28c28"/>
+  <circle cx="35" cy="32" r="10" fill="#4aa3df" stroke="#fff" stroke-width="4"/>
+</svg>