Added new JOB queries

[amascolo]

Checked by running sbt "testOnly * -- -n TestGJ" and similarly FJ, commenting out accordingly:

sdql/build.sbt

Lines 19 to 20 in a09c717

	Tests.Argument(TestFrameworks.ScalaTest, "-l", "TestGJ"),
	Tests.Argument(TestFrameworks.ScalaTest, "-l", "TestFJ"),

[amascolo]

@amiralikaboli see edin-dal/sdql-benchmark#4 (comment)

[amascolo]

Note there might be a good reason to exclude 2c / 10b / 32a as noted in the free-join paper:

We exclude 5 queries from JOB that return empty results, since such empty queries
are known to introduce reproducibility issues.⁵

⁵ See GitHub issue: gregrahn/join-order-benchmark#11

[amascolo]

As discussed with @amiralikaboli, removing the null queries but keeping 13a / 13d as the result for 13d is expected due to how we do lexicographical ordering of ' vs ".