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.

resources/views/clients/edit.blade.php

@@ -37,6 +37,22 @@
                         @endforeach
                     </select>
                 </div>
+                <div class="sm:col-span-2">
+                    <label class="block text-sm font-semibold text-gray-700 mb-1">🏷️ Category</label>
+                    <select name="category_id" class="input-soft">
+                        <option value="">— No Category —</option>
+                        @foreach($categoryTree as $parent)
+                            <option value="{{ $parent->id }}" {{ old('category_id', $client->category_id) == $parent->id ? 'selected' : '' }}>
+                                {{ $parent->icon }} {{ $parent->name }}
+                            </option>
+                            @foreach($parent->children as $child)
+                                <option value="{{ $child->id }}" {{ old('category_id', $client->category_id) == $child->id ? 'selected' : '' }}>
+                                    &nbsp;&nbsp;↳ {{ $child->icon }} {{ $child->name }}
+                                </option>
+                            @endforeach
+                        @endforeach
+                    </select>
+                </div>
             </div>
 
             <div>