feat: add user preferences for filter and objective visibility in HomePageClient

- Implemented state management for filter and objective visibility using `useState`.
- Integrated `userPreferencesService` to load and save user preferences on component mount and toggle actions.
- Updated `KanbanBoardContainer` to conditionally render filters and objectives based on user preferences.
- Enhanced UI with buttons for toggling visibility, improving user experience and customization.

services/user-preferences.ts

@@ -14,6 +14,7 @@ export interface ViewPreferences {
   swimlanesByTags: boolean;
   swimlanesMode?: 'tags' | 'priority';
   showObjectives: boolean;
+  showFilters: boolean;
 }
 
 export interface ColumnVisibility {
@@ -37,7 +38,8 @@ const DEFAULT_PREFERENCES: UserPreferences = {
   viewPreferences: {
     compactView: false,
     swimlanesByTags: false,
-    showObjectives: true
+    showObjectives: true,
+    showFilters: true
   },
   columnVisibility: {
     hiddenStatuses: []