feat: add header and footer images for 1x4 and 2x2 layouts, update canvas dimensions accordingly

src/App.vue

@@ -4,7 +4,7 @@ import HelloWorld from './components/HelloWorld.vue'
 </script>
 
 <template>
-  <header>
+  <!-- <header >
     <img alt="Vue logo" class="logo" src="@/assets/logo.svg" width="125" height="125" />
 
     <div class="wrapper">
@@ -15,8 +15,9 @@ import HelloWorld from './components/HelloWorld.vue'
         <RouterLink to="/about">About</RouterLink>
       </nav>
     </div>
-  </header>
+  </header> -->
 
+  <RouterLink to="/">Home</RouterLink>
   <RouterView />
 </template>