feat: customer groups for people and companies with tahesab group sync and bulk register

Multiple groups per contact, legacy group text migrated, excel import/export, contacts filter and column, richer create-in-tahesab, match-first bulk export

apps/api/src/app.module.ts

@@ -54,6 +54,7 @@ import { DeletionsModule } from './deletions/deletions.module';
 import { OutboundSmsModule } from './outbound-sms/outbound-sms.module';
 import { BehaviorModule } from './behavior/behavior.module';
 import { SmsBillingModule } from './sms-billing/sms-billing.module';
+import { CustomerGroupsModule } from './customer-groups/customer-groups.module';
 
 @Module({
   imports: [
@@ -65,6 +66,7 @@ import { SmsBillingModule } from './sms-billing/sms-billing.module';
     AiModule,
     PrismaModule,
     SmsBillingModule,
+    CustomerGroupsModule,
     OutboundSmsModule,
     StorageModule,
     HealthModule,