feat(dashboards): Add blank FRONTEND_ASSETS prebuilt dashboard (#109221)

## Summary
- Adds a new `FRONTEND_ASSETS` prebuilt dashboard (ID 24) with no
widgets, to be populated later for the assets module
- Creates `frontendAssets/` directory with `settings.ts` (dashboard
title) and `frontendAssets.ts` (config), following existing prebuilt
dashboard conventions
- Registers the new dashboard in the `PrebuiltDashboardId` enum and
`PREBUILT_DASHBOARDS` record

Author: DominikB2014

static/app/views/dashboards/utils/prebuiltConfigs.tsx

@@ -3,6 +3,7 @@ import {AI_AGENTS_MODELS_PREBUILT_CONFIG} from 'sentry/views/dashboards/utils/pr
 import {AI_AGENTS_OVERVIEW_PREBUILT_CONFIG} from 'sentry/views/dashboards/utils/prebuiltConfigs/aiAgentsOverview';
 import {AI_AGENTS_TOOLS_PREBUILT_CONFIG} from 'sentry/views/dashboards/utils/prebuiltConfigs/aiAgentsTools';
 import {BACKEND_OVERVIEW_PREBUILT_CONFIG} from 'sentry/views/dashboards/utils/prebuiltConfigs/backendOverview/backendOverview';
+import {FRONTEND_ASSETS_PREBUILT_CONFIG} from 'sentry/views/dashboards/utils/prebuiltConfigs/frontendAssets/frontendAssets';
 import {FRONTEND_OVERVIEW_PREBUILT_CONFIG} from 'sentry/views/dashboards/utils/prebuiltConfigs/frontendOverview/frontendOverview';
 import {HTTP_DOMAIN_SUMMARY_PREBUILT_CONFIG} from 'sentry/views/dashboards/utils/prebuiltConfigs/http/domainSummary';
 import {HTTP_PREBUILT_CONFIG} from 'sentry/views/dashboards/utils/prebuiltConfigs/http/http';
@@ -47,6 +48,7 @@ export enum PrebuiltDashboardId {
   MCP_RESOURCES = 21,
   MCP_PROMPTS = 22,
   LARAVEL_OVERVIEW = 23,
+  FRONTEND_ASSETS = 24,
 }
 
 export type PrebuiltDashboard = Omit<DashboardDetails, 'id'>;
@@ -81,4 +83,5 @@ export const PREBUILT_DASHBOARDS: Record<PrebuiltDashboardId, PrebuiltDashboard>
   [PrebuiltDashboardId.AI_AGENTS_OVERVIEW]: AI_AGENTS_OVERVIEW_PREBUILT_CONFIG,
   [PrebuiltDashboardId.MCP_OVERVIEW]: MCP_OVERVIEW_PREBUILT_CONFIG,
   [PrebuiltDashboardId.LARAVEL_OVERVIEW]: LARAVEL_OVERVIEW_PREBUILT_CONFIG,
+  [PrebuiltDashboardId.FRONTEND_ASSETS]: FRONTEND_ASSETS_PREBUILT_CONFIG,
 };

static/app/views/dashboards/utils/prebuiltConfigs/frontendAssets/frontendAssets.ts

@@ -0,0 +1,10 @@
+import type {PrebuiltDashboard} from 'sentry/views/dashboards/utils/prebuiltConfigs';
+import {DASHBOARD_TITLE} from 'sentry/views/dashboards/utils/prebuiltConfigs/frontendAssets/settings';
+
+export const FRONTEND_ASSETS_PREBUILT_CONFIG: PrebuiltDashboard = {
+  dateCreated: '',
+  projects: [],
+  filters: {},
+  title: DASHBOARD_TITLE,
+  widgets: [],
+};

static/app/views/dashboards/utils/prebuiltConfigs/frontendAssets/settings.ts

@@ -0,0 +1,3 @@
+import {t} from 'sentry/locale';
+
+export const DASHBOARD_TITLE = t('Frontend Assets');