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/uikit/uikit-emptystate.component.html

@@ -0,0 +1,16 @@
+<div class="flex flex-col items-center justify-center py-12 text-center bg-surface-overlay">
+  <ng-container>
+    <i [class]="icon + ' !text-6xl mb-4 text-surface-500'" aria-hidden="true"></i>
+  </ng-container>
+  <span class="text-xl font-semibold mb-2 text-surface-500">{{ title }}</span>
+  @if (description) {
+    <p class="text-surface-500 inline-block">{{ description }}</p>
+  }
+  <ng-content select="[cta]" #cta class="mt-4"></ng-content>
+  @if (!hasCtaContent && ctaLabel && showCTA) {
+    <p-button class="mt-2" size="small" (click)="ctaClick.emit()">
+      {{ ctaLabel }}
+      <i class="pi pi-plus" pButtonIcon></i>
+    </p-button>
+  }
+</div>