Add tests to maven test directory

[tomersagi]

Add tests here: https://github.com/shraga89/Ontobuilder-Research-Environment/tree/add_pom/src/test/java/ac/technion/schemamatching/experiments

• Basic schema matching experiment with OBTerm
• Schema matching experiment for each dataset type and each matcher

[tomersagi]

I collected a bunch of tests from the old source code. @oryagol Please start out by converting them into Junit tests. See example in OBExperimentRunnerTest class file.