Adopt formal logging protocol

[ssoper]

• https://github.com/apache/logging-log4j-kotlin
• https://www.baeldung.com/kotlin/logging
• http://www.slf4j.org/manual.html
• https://sematext.com/blog/java-logging/

[ssoper]

Resolving this update will also include catch errors thrown by Jackson conversion due to nulls, type errors, etc. and logging them.

[ssoper]

Part of resolving this should include detangling the verbose flag and having it live only in the clients package while the logger is used instead.