Libs package

[simonhir]

Description
Some helper classes are defined in each backend service (i.e. s3-integration-service, backend-template).
These classes that are never changed should be extracted to new refarch-libs package.
It is important to ensure a practical division of the classes into different packages.

At least following classes are relevant:

• configuration.nfcconverter.*
• configuration.UnicodeConfiguration
• configuration.JwtUserInfoAuthenticationConverter
• configuration.UserInfoAuthoritiesServices
• security.AuthUtils
• security.RequestResponseLoggingFilter

While extracting this classes correct setup of properties needs to be implemented (i.e. properties class for RequestResponseLoggingFilter)