Add swarm service

[anmorel]

Hello,

I've been working on integrating SWARM services into docker-gen.
Do you think it could be integrated into the project?

There are still a few things to do, such as triggering on signals.

What do you think of what I've done? Are there any improvements to be made to the integration?

Antoine

[anmorel]

Hi @buchdag,

I looked at the test that's failing; it depends on the method, so it's integrated.

What do you think?