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/connections.svelte.ts

@@ -0,0 +1,55 @@
+import { readonly, writable } from "svelte/store";
+
+class FightConnection {
+    constructor(
+        public readonly fromElement: HTMLElement,
+        public readonly toElement: HTMLElement,
+        public readonly color: string = "white",
+        public readonly background: boolean,
+        public readonly offset: number = 0
+    ) {}
+}
+
+export class FightConnector {
+    private connections: FightConnection[] = $state([]);
+
+    get allConnections(): FightConnection[] {
+        return this.connections;
+    }
+
+    get showedConnections(): FightConnection[] {
+        const showBackground = this.connections.some((conn) => !conn.background);
+        return showBackground ? this.connections.filter((conn) => !conn.background) : this.connections;
+    }
+
+    addTeamConnection(teamId: number): void {
+        const teamElements = document.getElementsByClassName(`team-${teamId}`);
+        const teamArray = Array.from(teamElements);
+        teamArray.sort((a, b) => {
+            const rectA = a.getBoundingClientRect();
+            const rectB = b.getBoundingClientRect();
+            return rectA.top - rectB.top || rectA.left - rectB.left;
+        });
+        for (let i = 1; i < teamElements.length; i++) {
+            const fromElement = teamElements[i - 1] as HTMLElement;
+            const toElement = teamElements[i] as HTMLElement;
+            this.connections.push(new FightConnection(fromElement, toElement, "white", false));
+        }
+    }
+
+    addConnection(fromElement: HTMLElement, toElement: HTMLElement, color: string = "white", offset: number = 0): void {
+        this.connections.push(new FightConnection(fromElement, toElement, color, true, offset));
+    }
+
+    clearConnections(): void {
+        this.connections = this.connections.filter((conn) => conn.background);
+    }
+
+    clearAllConnections(): void {
+        this.connections = [];
+    }
+}
+
+const fightConnectorInternal = writable(new FightConnector());
+
+export const fightConnector = readonly(fightConnectorInternal);