Include a Test Manifest to use with the earl-report tool

The LdpEarlTestManifest class can run on its own, like the TestCase
reporter.  It takes in the test classes and provides information on the
test cases in a Turtle file output.

Will be used eventually for reading in this file, and to generate a report ( #17 )

The mf:action for resources still needs to be worked out - there is a
TODO for this.