CQRS module lack of support for hybrid microservice

[yaniv-marshaly]

Bug Report

Current behavior

Hello,
I'm building a microservice that will support both TCP and RMQ connections,

If I use the regular microservice set up for my project the CQRS works great.
like so:

` const microserviceOptions = {
transport: Transport.RMQ,
options: {
queue: 'data',
urls: ['amqp://localhost:5672'],
},
}

const app = await NestFactory.createMicroservice(AppModule, microserviceOptions);
app.listen(() => console.log("Microservice is listening"));`

but if change it to support hybrid application I get the

CommandHandler not found exception!

` const microserviceOptions = {
transport: Transport.RMQ,
options: {
queue: 'data',
urls: ['amqp://localhost:5672'],
},
};

const app = await NestFactory.create(AppModule);
app.connectMicroservice(microserviceOptions);
app.startAllMicroservices(() => console.log('Microservice is listening'));`

Environment

Nest version: 6.0.0
 
For Tooling issues:
- Node version: 10.14.1
- Platform:  Mac

Others:
using VSCode

[kamilmysliwiec]

Please, provide a minimal repository which reproduces your issue.

[yaniv-marshaly]

https://github.com/Yanivox/nest-cqrs-example

[yaniv-marshaly]

I found the solution for this bug.
need to init the nest application module
I'll make a pull request

[kamilmysliwiec]

Let's track this issue here nestjs/nest#3153

[Samox]

Can we re-open this issue? We use CQRS and we'd like hybrid applications (in order to add a /healthcheck endpoint on our microservice process).
Here is a repository with the issue https://github.com/Samox/nestjs-microservices-example