authentication module done

libs/common/src/helper/helper.module.ts

@@ -0,0 +1,11 @@
+import { Global, Module } from '@nestjs/common';
+import { HelperHashService } from './services';
+
+@Global()
+@Module({
+  providers: [HelperHashService],
+  exports: [HelperHashService],
+  controllers: [],
+  imports: [],
+})
+export class HelperModule {}