Split into smaller repositories

[mattiasliljenzin]

Too many dependencies at the moment and they are not used as one all the time.
I suggest we break it into more granular pieces, like for consuming, producing and how to produce a message.

Today we have these features:

• Consume message
• Produce message via interface
• ExtendedSimpleNotificationService (delayed publish)
• Publish messages too large via S3
• MutationModel