feat(sfc-playground): add github link (#5067)

packages/sfc-playground/src/Header.vue

@@ -5,6 +5,7 @@ import Sun from './icons/Sun.vue'
 import Moon from './icons/Moon.vue'
 import Share from './icons/Share.vue'
 import Download from './icons/Download.vue'
+import GitHub from './icons/GitHub.vue'
 
 // @ts-ignore
 const { store } = defineProps(['store'])
@@ -125,6 +126,17 @@ async function fetchVersions(): Promise<string[]> {
       >
         <Download />
       </button>
+      <button
+          title="View on GitHub"
+          class="github"
+      >
+        <a
+            href="https://github.com/vuejs/vue-next/tree/master/packages/sfc-playground"
+            target="_blank"
+        >
+          <GitHub />
+        </a>
+      </button>
     </div>
   </nav>
 </template>
@@ -272,7 +284,8 @@ h1 img {
 }
 
 .share,
-.download {
+.download,
+.github {
   margin: 0 2px;
 }
 </style>

packages/sfc-playground/src/icons/GitHub.vue

@@ -0,0 +1,7 @@
+<template>
+  <svg width="1.7em" height="1.7em" viewBox="0 0 24 24">
+    <path
+        fill="#666"
+        d="M10.9,2.1c-4.6,0.5-8.3,4.2-8.8,8.7c-0.5,4.7,2.2,8.9,6.3,10.5C8.7,21.4,9,21.2,9,20.8v-1.6c0,0-0.4,0.1-0.9,0.1 c-1.4,0-2-1.2-2.1-1.9c-0.1-0.4-0.3-0.7-0.6-1C5.1,16.3,5,16.3,5,16.2C5,16,5.3,16,5.4,16c0.6,0,1.1,0.7,1.3,1c0.5,0.8,1.1,1,1.4,1 c0.4,0,0.7-0.1,0.9-0.2c0.1-0.7,0.4-1.4,1-1.8c-2.3-0.5-4-1.8-4-4c0-1.1,0.5-2.2,1.2-3C7.1,8.8,7,8.3,7,7.6C7,7.2,7,6.6,7.3,6 c0,0,1.4,0,2.8,1.3C10.6,7.1,11.3,7,12,7s1.4,0.1,2,0.3C15.3,6,16.8,6,16.8,6C17,6.6,17,7.2,17,7.6c0,0.8-0.1,1.2-0.2,1.4 c0.7,0.8,1.2,1.8,1.2,3c0,2.2-1.7,3.5-4,4c0.6,0.5,1,1.4,1,2.3v2.6c0,0.3,0.3,0.6,0.7,0.5c3.7-1.5,6.3-5.1,6.3-9.3 C22,6.1,16.9,1.4,10.9,2.1z"></path>
+  </svg>
+</template>