Develop an adapter to call mlcp transforms

[sammefford]

This is needed because Data Movement SDK will only use mlcp-style transforms, but we want transforms developed for Data Movement SDK or mlcp to be useable via applications using the Java Client API. This will prevent devs from needing to write one transform twice.

This could be a pre-installed XQuery module which we document how to call it. It could also be additional methods on ServerTransform like:

ServerTrasnform {
    ServerTransform(String module, String function)
    ServerTransform(String module, String function, String namespace)
}

[sammefford]

This is less important now since data-movement sdk will no longer build on mlcp, so we won't need to support mlcp transforms. Nevertheless, a first crack at this is checked in: https://github.com/marklogic/java-client-api/blob/develop/src/test/resources/MlcpTransformAdapter.xqy