Add mutiny to the Reactive category in the dependencies

[wowselim]

Describe the feature

It would be nice to have mutiny alongside the already existing RxJava, Reactive Streams & Coroutine dependencies.

Use cases

Projects using mutiny

Contribution

I can look into adding this feature. From what I see, there are no external group ids in the dependencies yet so it seems to be a new feature entirely.

[tsegismont]

Would be great if you could contribute this, thank you @wowselim !

[tsegismont]

Keep in mind that Vert.x bindings for Mutiny are packaged as separate artifacts for each module, unlike Vert.x bindings for RxJava.