[Mongodb Client Extension] Expose MongoTestResource

[ch3rub1]

Description
It seems there is no quarkus test resource available to perform some integration tests with MongoDB.
We manage to do this kind of testing by providing an implementation of QuarkusTestResourceLifecycleManager which start ans stop a embed mongo database (using de.flapdoodle.embed.mongo) but this test resource could be provided by default, with the use on mongodb client extension.

Implementation ideas
I saw in the repository that many MongoTestResource imlementation exists for quarkus testing.
Having such a similar test resource exposed will be useful for anyone who want to write some integrations tests with MongoDB.

[ghost]

/cc @evanchooly, @loicmathieu