HPPC-334 moved files to api module, fixed plugins & updated logging

• moved src files under api module, eventually we will have liquibase scripts so that will go under its own module ‘db’
• the logback.xml needed updating, it wasn’t writing to console and created a log file locally which is not required. The new logback file will write to file if its set in application.yml otherwise default is console
• Spotless and checkstyle plugins were not running because they were under ‘pluginsManagement’
• Swagger file was not being generated
• Spotless found few typos also which were auto fixed

Closes HPPC-334