refactor: organize backend by business responsibility

src/modules/investments/income/income.module.ts

@@ -0,0 +1,12 @@
+import { Module } from '@nestjs/common';
+import { AuthModule } from '../../auth/auth.module';
+import { OperationsModule } from '../operations/operations.module';
+import { IncomeAnalyticsController } from './income-analytics.controller';
+import { IncomeAnalyticsService } from './income-analytics.service';
+
+@Module({
+  imports: [AuthModule, OperationsModule],
+  controllers: [IncomeAnalyticsController],
+  providers: [IncomeAnalyticsService],
+})
+export class IncomeModule {}