Introduce "Red Hood" module with more pragmatic approach

[mat3e]

• Instead of multiple modules - just a single module and a better encapsulation with more package-private access
• DB mappings directly in models
• Tests without Spring Context - unit tests with unit being a whole package (tested through public APIs - command & query)

Thanks to the second example, monolith module took a little more responsibility - configures production DB and event processing (should take care of all infra things like that).