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/index.ts

@@ -0,0 +1,5 @@
+// Core Services
+export { AuthService } from './auth.service';
+export { ErrorHandlerService } from './error-handler.service';
+export { ConfigService } from './config.service';
+export * from './breadcrumb.service';