Add watch on youtube button on each video item

src/invidious/views/components/item.ecr

@@ -141,6 +141,9 @@
                 <b style="flex: 1;">
                     <a style="width:100%" href="/channel/<%= item.ucid %>"><%= item.author %></a>
                 </b>
+                <a title="<%=translate(locale, "Watch on YouTube")%>" href="https://youtube.com/watch?v=<%= item.id %>" style="margin-right: 5px;">
+                    <i class="icon ion-logo-youtube"></i>
+                </a>
                 <a title="<%=translate(locale, "Audio mode")%>" href="/watch?v=<%= item.id %>&amp;listen=1">
                     <i class="icon ion-md-headset"></i>
                 </a>