adding app config and auth modules

libs/modules/src/auth/auth.module.ts

@@ -0,0 +1,21 @@
+import { Module, DynamicModule } from '@nestjs/common';
+import { AuthService } from './auth.service';
+import { AuthOptions } from './auth.interface';
+import { AUTH_OPTIONS } from './auth.constants';
+
+@Module({})
+export class AuthModule {
+  static register(options: AuthOptions): DynamicModule {
+    return {
+      module: AuthModule,
+      providers: [
+        {
+          provide: AUTH_OPTIONS,
+          useValue: options
+        },
+        AuthService
+      ],
+      exports: [AuthService]
+    };
+  }
+}