Use logback and offer structured logging options

[n-oden]

• install logback-classic and exclude conflicting transitive dependencies in pom.xml

• add a default logback.xml file

• update the README to link to the logback documentation and point out how and where to enable structured logging

• add test.Dockerfile to build a deployable docker image from a locally built fatjar

[zhicwu]

Thanks for your contribution @n-oden. JDBC bridge is not actively maintained on server side, so I'd suggest you using another table function like url instead. I'll find time to implement a new module in clickhouse-jdbc repo to retire this one.

[n-oden]

Thanks for your contribution @n-oden. JDBC bridge is not actively maintained on server side, so I'd suggest you using another table function like url instead. I'll find time to implement a new module in clickhouse-jdbc repo to retire this one.

Oh, oops. You might want to mark this repo as archived then to keep people away from it. I'll take a quick look at the clickhouse-JDBC repo and see if it's difficult to port this change over to it.