Add a JDBC module

[gbrail]

There are some databases out there without native Node.js drivers, and it'd be better to have a way to use them that takes advantage of the power of Java.

Create a "trireme-jdbc" NPM module that is backed by a native Java module that exposes JDBC. At the very least, it should:

• Allow connections to any JDBC driver in the class path using the usual convention of a JDBC URL.
• Support common properties on the connection
• Support prepared statements, wildcards, and other basic ways of executing queries
• Can return query results to an EventListener as in a stream

It's debatable whether this should support connection pooling -- if it does not, then we will need another Node.js module to do that part.