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.component.ts

@@ -1,10 +1,16 @@
 import { Component } from '@angular/core';
 import { RouterModule } from '@angular/router';
+import { ToastModule } from 'primeng/toast';
 
 @Component({
     selector: 'app-root',
     standalone: true,
-    imports: [RouterModule],
-    template: `<router-outlet></router-outlet>`
+    imports: [RouterModule, ToastModule],
+    template: `
+        <div>
+            <p-toast position="bottom-right" />
+            <router-outlet />
+        </div>
+    `,
 })
 export class AppComponent {}