Health monitor status for admin panel (#10186)

# Health Monitoring for Self-Hosted Instances

This PR implements basic health monitoring for self-hosted instances in
the admin panel.

## Service Status Checks
We're adding real-time health checks for:
- Redis Connection
- Database Connection
- Worker Status
- Message Sync Status

## Existing Functionality
We already have message sync and captcha counters that store aggregated
metrics in cache within a configurable time window (default: 5 minutes).

## New Endpoints
1. `/healthz` - Basic server health check for Kubernetes pod monitoring
2. `/healthz/{serviceName}` - Individual service health checks (returns
200 if healthy)
3. `/metricsz/{metricName}` - Time-windowed metrics (message sync,
captcha)
4. GraphQL resolver in admin panel for UI consumption

All endpoints use the same underlying service, with different
presentation layers for infrastructure and UI needs.

---------

Co-authored-by: Félix Malfait <felix@twenty.com>

packages/twenty-front/src/modules/settings/admin-panel/components/SettingsAdminTabContent.tsx

@@ -1,5 +1,6 @@
 import { SettingsAdminEnvVariables } from '@/settings/admin-panel/components/SettingsAdminEnvVariables';
 import { SettingsAdminGeneral } from '@/settings/admin-panel/components/SettingsAdminGeneral';
+import { SettingsAdminHealthStatus } from '@/settings/admin-panel/components/SettingsAdminHealthStatus';
 import { SETTINGS_ADMIN_TABS } from '@/settings/admin-panel/constants/SettingsAdminTabs';
 import { SETTINGS_ADMIN_TABS_ID } from '@/settings/admin-panel/constants/SettingsAdminTabsId';
 import { useTabList } from '@/ui/layout/tab/hooks/useTabList';
@@ -12,6 +13,8 @@ export const SettingsAdminTabContent = () => {
       return <SettingsAdminGeneral />;
     case SETTINGS_ADMIN_TABS.ENV_VARIABLES:
       return <SettingsAdminEnvVariables />;
+    case SETTINGS_ADMIN_TABS.HEALTH_STATUS:
+      return <SettingsAdminHealthStatus />;
     default:
       return null;
   }