feat: Add editability feature to UpdateService and integrate with NavMenuComponent

- Added `isEditable` property to `UpdateService` for managing editability state.
- Integrated `isEditable` with a `mat-slide-toggle` in `NavMenuComponent` to toggle edit mode.
- Updated `UpdateService` to persist `isEditable` state in localStorage.

DigitalData.UserManager.API/ClientApp/user_manager_ui/src/app/components/nav-menu/nav-menu.component.html

@@ -30,6 +30,7 @@
       <!-- Right menu -->
       <div class="navbar-collapse justify-content-end me-5">
         <a class="navbar-brand" [routerLink]="['/']">User Manager Portal</a>
+        <mat-slide-toggle [(ngModel)]="updateService.isEditable"></mat-slide-toggle>
         <button *ngIf="isLogedIn()" class="btn">
           <mat-icon class="scale-pulse" [matBadge]="updateActCount === 0 ? '' : updateActCount" (click)="updateService.executeAll()">save</mat-icon>
         </button>

DigitalData.UserManager.API/ClientApp/user_manager_ui/src/app/components/nav-menu/nav-menu.component.ts

@@ -10,10 +10,14 @@ import { RefreshService } from '../../services/refresh.service';
 import { CreationService } from '../../services/creation.service';
 import { UpdateService, UpdateEvent } from '../../services/update.service';
 import { MatBadgeModule } from '@angular/material/badge';
+import {
+  MatSlideToggleModule,
+} from '@angular/material/slide-toggle';
+import { FormsModule } from '@angular/forms';
 
 @Component({
   standalone: true,
-  imports: [RouterModule, CommonModule, ColorModeBttnComponent, MatIconModule, MatBadgeModule],
+  imports: [RouterModule, CommonModule, ColorModeBttnComponent, MatIconModule, MatBadgeModule, MatSlideToggleModule, FormsModule],
   selector: 'app-nav-menu',
   templateUrl: './nav-menu.component.html',
   styleUrls: ['./nav-menu.component.css']
@@ -26,6 +30,8 @@ export class NavMenuComponent {
 
   updateActCount: number;
 
+  isChecked = true;
+
   constructor(private dialog: MatDialog, private authService: AuthenticationService, public refreshService: RefreshService, public creationService: CreationService, public updateService: UpdateService) {
     this.authService.isAuthenticated().then().catch()
     this.updateActCount = this.updateService.totalCount;

DigitalData.UserManager.API/ClientApp/user_manager_ui/src/app/services/update.service.ts

@@ -73,6 +73,18 @@ export class UpdateService {
   removeAllChangeListeners() {
     this.countChangeListeners = []
   }
+
+  //cell edit
+  private _isEditable: boolean = (typeof window !== 'undefined') ? (localStorage.getItem('editable') === "T") : true;
+  public get isEditable(): boolean {
+    return this._isEditable;
+  }
+
+  public set isEditable(value: boolean) {
+    if (typeof window !== 'undefined')
+      localStorage.setItem('editable', value ? "T" : "F")
+    this._isEditable = value;
+  }
 }
 
 export enum UpdateEvent {