refactor: organize backend by business responsibility

src/integrations/moex/moex.module.ts

@@ -0,0 +1,8 @@
+import { Module } from '@nestjs/common';
+import { MoexClient } from './moex.client';
+
+@Module({
+  providers: [MoexClient],
+  exports: [MoexClient],
+})
+export class MoexModule {}