feat: Add notification services for Email, Telegram, and WhatsApp

- Implement EmailNotifier for sending batch and test notifications via email.
- Implement TelegramNotifier for sending batch and test notifications via Telegram.
- Implement WahaNotifier for sending batch and test notifications via WhatsApp using WAHA API.
- Create migration for client_categories table and update clients table to include category_id.
- Create migration for notification_settings table to manage notification configurations.
- Add ClientCategorySeeder to populate default client categories.
- Create manifest.json for PWA support.
- Implement service worker (sw.js) for caching static assets and offline support.
- Add edit event view for modifying scheduled events.
- Create search results view for displaying search queries.
- Develop notification settings view for configuring notification channels and triggers.

public/manifest.json

@@ -0,0 +1,26 @@
+{
+    "name": "KOL Manager",
+    "short_name": "KOL",
+    "description": "Your Purr-fect Influencer Management Assistant",
+    "start_url": "/",
+    "display": "standalone",
+    "orientation": "portrait-primary",
+    "background_color": "#FFF8F0",
+    "theme_color": "#FFB7C5",
+    "icons": [
+        {
+            "src": "/icons/icon-192.png",
+            "sizes": "192x192",
+            "type": "image/png",
+            "purpose": "any maskable"
+        },
+        {
+            "src": "/icons/icon-512.png",
+            "sizes": "512x512",
+            "type": "image/png",
+            "purpose": "any maskable"
+        }
+    ],
+    "categories": ["business", "productivity"],
+    "screenshots": []
+}