WIP on modularization
Split micro-infra-spring into 5 modules (maintained backwards compatibility)

- micro-infra-spring-base - contains the base 4finance setup
- micro-infra-spring-reactor - will contain Spring reactor stuff
- micro-infra-spring-swagger - swagger setup
- micro-infra-spring-swagger-ui - swagger ui
- micro-infra-spring - base + whole swagger
Merge pull request #25 from 4finance/modularization

Modularization