Subscriptions: RabbitMQ provider

[Deathrage]

First version of RabbitMQ PubSub. Key assumptions are:

• Rabbit topics are not used
• HC topic is represented by a Rabbit exchange
• For every HC topic, each HC instance holds a Rabbit consumer (n topics and m instances -> n*m consumers)
• Every consumer has an exclusive queue to an exchange (n topics and m instances -> n*m consumers -> n*m queues)
• Single consumer consumes only one queue (queue is exclusive)
• Niether exchanges nor queues are durable
• Behaviour above can be changed directly in Config DTO and/or by overriding IExchangeNameFactory and IQueueNameFactory

Schema how messages are distributed (illustrates that ISourceStream does not directly connect to RabbitMQ):

[CLAassistant]

All committers have signed the CLA.

[Deathrage]

@michaelstaib I have inspected the issue reported by code analyzer, it seemst that it is caused by tests in namespace StrawberryShake.CodeGeneration.CSharp.Analyzers.CustomScalar as there is

public static class DependencyInjection
{
    public static void Configure(IServiceCollection services)
    {
        services.AddCustomScalarClient();
    }
}

But method AddCustomScalarClient does not exist. Is si supposed to get generated? If so, it does not happen.

[michaelstaib]

@Deathrage I am working on the code gen issue with strawberry shake ... so no worries. It started to happen when we moved to .net 7.

[michaelstaib]

We have reworked the subscription system and implemented this driver now with a separate PR.