feat: add logo image and RTL support styles

- Added logo image to assets.
- Implemented RTL support styles in rtlSupport.scss for various components including breadcrumb, datatable, and tree node toggle button.

chore: configure environment files for production, staging, and development

- Created environment.prod.ts for production settings.
- Created environment.staging.ts for staging settings.
- Created environment.ts for local development settings.

feat: define custom theme preset

- Added presets.ts to define a custom theme preset using PrimeUIX with specific component styles and semantic colors.

chore: set up proxy configuration for local development

src/app/core/services/breadcrumb.service.ts

@@ -0,0 +1,31 @@
+import { Injectable, inject, signal } from '@angular/core';
+import { NavigationStart, Router } from '@angular/router';
+import { MenuItem } from 'primeng/api';
+import { filter } from 'rxjs/operators';
+
+@Injectable({ providedIn: 'root' })
+export class BreadcrumbService {
+  private readonly _items = signal<MenuItem[]>([]);
+
+  private router = inject(Router);
+
+  constructor() {
+    // Clear breadcrumb items on navigation start so previous page items don't persist.
+    // Components for the new route can set their own items in their lifecycle (e.g. ngOnInit).
+    this.router.events.pipe(filter((e) => e instanceof NavigationStart)).subscribe(() => {
+      this.clear();
+    });
+  }
+
+  get items() {
+    return this._items();
+  }
+
+  setItems(items: MenuItem[]) {
+    this._items.set(items);
+  }
+
+  clear() {
+    this._items.set([]);
+  }
+}