Initial commit with files

Still need to fix the imports

src/lib/components/tabs/TabList.svelte

@@ -0,0 +1,13 @@
+<script lang="ts">
+    import { useTabsContext } from "./TabGroup.svelte";
+
+    let api = useTabsContext("TabList");
+    $: propsWeControl = {
+        role: "tablist",
+        "aria-orientation": $api.orientation,
+    };
+</script>
+
+<div {...{ ...$$restProps, ...propsWeControl }}>
+    <slot selectedIndex={$api.selectedIndex} />
+</div>