prepare a dissection for Defects4J v3

[monperrus]

prepare a dissection for Defects4J v3

references:

• defects4j v1 dissection https://program-repair.org/defects4j-dissection/
• code for dissection somewhere on Github https://github.com/ASSERT-KTH/dissection

a good amanuens task

filing the task here, that's the most appropriate for know, can move it later.