Add skeleton for apps page as example of full width page

packages/builder/src/pages/portal/apps/_layout.svelte

@@ -0,0 +1,7 @@
+<script>
+  import { Page } from "@budibase/bbui"
+</script>
+
+<Page wide>
+  <slot />
+</Page>

packages/builder/src/pages/portal/apps/index.svelte

@@ -0,0 +1,27 @@
+<script>
+  import { Heading, Layout } from "@budibase/bbui"
+</script>
+
+<Layout noPadding>
+  <div>
+    <Heading>Apps</Heading>
+  </div>
+  <div class="appList">
+    {#each new Array(10) as _}
+      <div class="app" />
+    {/each}
+  </div>
+</Layout>
+
+<style>
+  .appList {
+    display: grid;
+    grid-gap: 50px;
+    grid-template-columns: repeat(auto-fill, 300px);
+  }
+  .app {
+    height: 130px;
+    border-radius: 4px;
+    background-color: var(--spectrum-global-color-gray-200);
+  }
+</style>