refactor: extract totp operations in seperate service

backend/src/auth/auth.module.ts

@@ -2,12 +2,13 @@ import { Module } from "@nestjs/common";
 import { JwtModule } from "@nestjs/jwt";
 import { AuthController } from "./auth.controller";
 import { AuthService } from "./auth.service";
+import { AuthTotpService } from "./authTotp.service";
 import { JwtStrategy } from "./strategy/jwt.strategy";
 
 @Module({
   imports: [JwtModule.register({})],
   controllers: [AuthController],
-  providers: [AuthService, JwtStrategy],
+  providers: [AuthService, AuthTotpService, JwtStrategy],
   exports: [AuthService],
 })
 export class AuthModule {}