Initial commit with files

Still need to fix the imports

src/lib/components/popover/PopoverOverlay.svelte

@@ -0,0 +1,25 @@
+<script lang="ts">
+    import { State } from "./open-closed";
+    import { getContext } from "svelte";
+    import type { Writable } from "svelte/store";
+    import { PopoverStates, StateDefinition } from "./Popover.svelte";
+
+    let api: Writable<StateDefinition> | undefined = getContext("PopoverApi");
+
+    let openClosedState: Writable<State> | undefined = getContext("OpenClosed");
+
+    $: visible =
+        openClosedState !== undefined
+            ? $openClosedState === State.Open
+            : $api.popoverState === PopoverStates.Open;
+
+    function handleClick() {
+        $api.closePopover();
+    }
+</script>
+
+{#if visible}
+    <div {...$$restProps} on:click={handleClick} aria-hidden>
+        <slot open={$api.popoverState === PopoverStates.Open} />
+    </div>
+{/if}