feat(events): Add comprehensive events management with dynamic fetching and UI

- Integrate Reka UI Tabs component for event browsing
- Create useEvents composable for event data management
- Implement events API integration with error handling
- Add events page with upcoming and past events sections
- Configure environment variables for API connection
- Add internationalization support for events navigation

src/lib/api/events.ts

@@ -0,0 +1,28 @@
+import type { Event, EventsApiError } from '../types/event'
+
+const API_BASE_URL = import.meta.env.VITE_API_BASE_URL || 'http://lnbits'
+const API_KEY = import.meta.env.VITE_API_KEY
+
+export async function fetchEvents(allWallets = true): Promise<Event[]> {
+  try {
+    const response = await fetch(
+      `${API_BASE_URL}/events/api/v1/events?all_wallets=${allWallets}`,
+      {
+        headers: {
+          'accept': 'application/json',
+          'X-API-KEY': API_KEY,
+        },
+      }
+    )
+
+    if (!response.ok) {
+      const error: EventsApiError = await response.json()
+      throw new Error(error.detail[0]?.msg || 'Failed to fetch events')
+    }
+
+    return await response.json() as Event[]
+  } catch (error) {
+    console.error('Error fetching events:', error)
+    throw error
+  }
+}