feat: add fixed asset classes management page and embed functionality

- Implemented a new page for managing fixed asset classes with full CRUD functionality.
- Added filtering options for searching classes by code, description, type, and fraction.
- Integrated dialogs for inserting, editing, and deleting classes with validation.
- Enhanced error handling and user feedback with toast notifications.
- Created an embedded iframe for the fixed asset classes page in the merchandise section.

frontend/src/lib/components/dashboard/customs_brokers/create-dialog.svelte

@@ -205,10 +205,10 @@
     </div>
 
     <Dialog.Footer>
-      <Button variant="outline" on:click={() => (open = false)} disabled={loading}>
+      <Button variant="outline" onclick={() => (open = false)} disabled={loading}>
         Cancelar
       </Button>
-      <Button on:click={handleSubmit} disabled={loading}>
+      <Button onclick={handleSubmit} disabled={loading}>
         {#if loading}
           <Loader2 class="mr-2 h-4 w-4 animate-spin" />
           Guardando

frontend/src/lib/components/sidebar/modules.ts

@@ -159,6 +159,10 @@ export function getSidebarData(): SidebarData {
 						title: m["sidebar.general_catalogs.company_information"](),
 						url: "/dashboard/general_catalogs/company_information",
 					},
+					{
+						title: "Catálogo de Clases de Activo Fijo",
+						url: "/dashboard/catalogs/fixed-asset-classes",
+					},
 					{
 						title: m["sidebar.general_catalogs.packages"](),
 						url: "/dashboard/general_catalogs/packages",
@@ -372,8 +376,8 @@ export function getSidebarData(): SidebarData {
 				icon: Package,
 				items: [
 					{
-						title: "Clase de Activo Fijo",
-						url: "/dashboard/merchandise/fixed_asset_classes",
+						title: "Catálogo de Clases de Activo Fijo",
+						url: "/dashboard/catalogs/fixed-asset-classes",
 					},
 				],
 			},