set up metrics collecting with open telemetry (#11236)

Done :  
- move metrics and health cache services from health module to metrics
module
- refactor metrics counter from specific method to set up from enum keys
- add OpenTelemetry (Otel) instrumentation for metrics
- set up Otel SDK to send metrics to Otel collector

To do later : 
- implement Otel instrumentation for traces + plug Sentry on top

packages/twenty-server/src/modules/calendar/calendar-event-import-manager/calendar-event-import-manager.module.ts

@@ -3,7 +3,7 @@ import { TypeOrmModule } from '@nestjs/typeorm';
 
 import { BillingModule } from 'src/engine/core-modules/billing/billing.module';
 import { FeatureFlag } from 'src/engine/core-modules/feature-flag/feature-flag.entity';
-import { HealthModule } from 'src/engine/core-modules/health/health.module';
+import { MetricsModule } from 'src/engine/core-modules/metrics/metrics.module';
 import { Workspace } from 'src/engine/core-modules/workspace/workspace.entity';
 import { DataSourceEntity } from 'src/engine/metadata-modules/data-source/data-source.entity';
 import { ObjectMetadataRepositoryModule } from 'src/engine/object-metadata-repository/object-metadata-repository.module';
@@ -50,7 +50,7 @@ import { WorkspaceMemberWorkspaceEntity } from 'src/modules/workspace-member/sta
     RefreshTokensManagerModule,
     ConnectedAccountModule,
     CalendarCommonModule,
-    HealthModule,
+    MetricsModule,
   ],
   providers: [
     CalendarChannelSyncStatusService,

packages/twenty-server/src/modules/calendar/common/calendar-common.module.ts

@@ -2,7 +2,7 @@ import { Module } from '@nestjs/common';
 import { TypeOrmModule } from '@nestjs/typeorm';
 
 import { FeatureFlag } from 'src/engine/core-modules/feature-flag/feature-flag.entity';
-import { HealthModule } from 'src/engine/core-modules/health/health.module';
+import { MetricsModule } from 'src/engine/core-modules/metrics/metrics.module';
 import { WorkspaceDataSourceModule } from 'src/engine/workspace-datasource/workspace-datasource.module';
 import { CalendarChannelSyncStatusService } from 'src/modules/calendar/common/services/calendar-channel-sync-status.service';
 import { ConnectedAccountModule } from 'src/modules/connected-account/connected-account.module';
@@ -12,7 +12,7 @@ import { ConnectedAccountModule } from 'src/modules/connected-account/connected-
     WorkspaceDataSourceModule,
     TypeOrmModule.forFeature([FeatureFlag], 'core'),
     ConnectedAccountModule,
-    HealthModule,
+    MetricsModule,
   ],
   providers: [CalendarChannelSyncStatusService],
   exports: [CalendarChannelSyncStatusService],

packages/twenty-server/src/modules/calendar/common/services/calendar-channel-sync-status.service.ts

@@ -5,8 +5,8 @@ import { Any } from 'typeorm';
 import { InjectCacheStorage } from 'src/engine/core-modules/cache-storage/decorators/cache-storage.decorator';
 import { CacheStorageService } from 'src/engine/core-modules/cache-storage/services/cache-storage.service';
 import { CacheStorageNamespace } from 'src/engine/core-modules/cache-storage/types/cache-storage-namespace.enum';
-import { HealthCacheService } from 'src/engine/core-modules/health/health-cache.service';
-import { HealthCounterCacheKeys } from 'src/engine/core-modules/health/types/health-counter-cache-keys.type';
+import { MetricsService } from 'src/engine/core-modules/metrics/metrics.service';
+import { MetricsKeys } from 'src/engine/core-modules/metrics/types/metrics-keys.type';
 import { TwentyORMManager } from 'src/engine/twenty-orm/twenty-orm.manager';
 import {
   CalendarChannelSyncStage,
@@ -24,7 +24,7 @@ export class CalendarChannelSyncStatusService {
     @InjectCacheStorage(CacheStorageNamespace.ModuleCalendar)
     private readonly cacheStorage: CacheStorageService,
     private readonly accountsToReconnectService: AccountsToReconnectService,
-    private readonly healthCacheService: HealthCacheService,
+    private readonly metricsService: MetricsService,
   ) {}
 
   public async scheduleFullCalendarEventListFetch(
@@ -179,11 +179,10 @@ export class CalendarChannelSyncStatusService {
 
     await this.schedulePartialCalendarEventListFetch(calendarChannelIds);
 
-    await this.healthCacheService.updateMessageOrCalendarChannelSyncJobByStatusCache(
-      HealthCounterCacheKeys.CalendarEventSyncJobByStatus,
-      CalendarChannelSyncStatus.ACTIVE,
-      calendarChannelIds,
-    );
+    await this.metricsService.batchIncrementCounter({
+      key: MetricsKeys.CalendarEventSyncJobActive,
+      eventIds: calendarChannelIds,
+    });
   }
 
   public async markAsFailedUnknownAndFlushCalendarEventsToImport(
@@ -210,11 +209,10 @@ export class CalendarChannelSyncStatusService {
       syncStage: CalendarChannelSyncStage.FAILED,
     });
 
-    await this.healthCacheService.updateMessageOrCalendarChannelSyncJobByStatusCache(
-      HealthCounterCacheKeys.CalendarEventSyncJobByStatus,
-      CalendarChannelSyncStatus.FAILED_UNKNOWN,
-      calendarChannelIds,
-    );
+    await this.metricsService.batchIncrementCounter({
+      key: MetricsKeys.CalendarEventSyncJobFailedUnknown,
+      eventIds: calendarChannelIds,
+    });
   }
 
   public async markAsFailedInsufficientPermissionsAndFlushCalendarEventsToImport(
@@ -266,11 +264,10 @@ export class CalendarChannelSyncStatusService {
       workspaceId,
     );
 
-    await this.healthCacheService.updateMessageOrCalendarChannelSyncJobByStatusCache(
-      HealthCounterCacheKeys.CalendarEventSyncJobByStatus,
-      CalendarChannelSyncStatus.FAILED_INSUFFICIENT_PERMISSIONS,
-      calendarChannelIds,
-    );
+    await this.metricsService.batchIncrementCounter({
+      key: MetricsKeys.CalendarEventSyncJobFailedInsufficientPermissions,
+      eventIds: calendarChannelIds,
+    });
   }
 
   private async addToAccountsToReconnect(