feat: Add event collection and event page structure

- Introduced a new events collection in config.ts with schema validation.
- Created a new event markdown file for the WarGear event.
- Updated German translations to include new event-related strings.
- Modified PageLayout to support a wide layout option.
- Enhanced announcements page to improve tag filtering and post rendering.
- Implemented dynamic event pages with detailed event information and fight plans.
- Added an index page for events to list all upcoming events.

src/components/event/EventCardOutline.svelte

@@ -0,0 +1,13 @@
+<script lang="ts">
+    import type { Snippet } from "svelte";
+
+    const {
+        children,
+    }: {
+        children: Snippet;
+    } = $props();
+</script>
+
+<div class="bg-neutral-900 border border-gray-700 rounded-lg overflow-hidden">
+    {@render children()}
+</div>