Add back a couple element components used in tests

Author: rgossiaux

src/lib/internal/elements/A.svelte

@@ -0,0 +1,22 @@
+<script lang="ts">
+  import type { ActionArray } from "$lib/hooks/use-actions";
+  import { useActions } from "$lib/hooks/use-actions";
+  import { get_current_component } from "svelte/internal";
+  import { forwardEventsBuilder } from "../forwardEventsBuilder";
+
+  export let use: ActionArray = [];
+  export let el: HTMLAnchorElement | null = null;
+  const forwardEvents = forwardEventsBuilder(get_current_component());
+
+  export let href = "javascript:void(0);";
+</script>
+
+<a
+  bind:this={el}
+  use:useActions={use}
+  use:forwardEvents
+  {href}
+  {...$$restProps}
+>
+  <slot />
+</a>

src/lib/internal/elements/Button.svelte

@@ -0,0 +1,13 @@
+<script lang="ts">
+  import type { ActionArray } from "$lib/hooks/use-actions";
+  import { useActions } from "$lib/hooks/use-actions";
+  import { get_current_component } from "svelte/internal";
+  import { forwardEventsBuilder } from "../forwardEventsBuilder";
+  export let use: ActionArray = [];
+  export let el: HTMLButtonElement | null = null;
+  const forwardEvents = forwardEventsBuilder(get_current_component());
+</script>
+
+<button bind:this={el} use:useActions={use} use:forwardEvents {...$$restProps}>
+  <slot />
+</button>