[FEATURE] add created response
[TASK] cleanup trustlines 

- adopt error and response handling
- remove ensureConnected logic
- add newline whitespace for readability
[TASK] remove now unused serverlib

connected check now happens in the router
[TASK] remove connected and uuid from info class

- connected is reduced to always return true since it comes after the rippled connected check
- uuid returns a uuid is not dependent on rippled connection