allow installing from commit for LAMMPS

[smoors]

(created using eb --new-pr)

[boegel]

@smoors I don't think this is sufficient, see also @laraPPr's PR:

• generate version from the source files for LAMMPS when using software-commit #3485

[smoors]

@smoors I don't think this is sufficient, see also @laraPPr's PR:

* [LAMMPS: generate version from the source files when using `software-commit` #3485](https://github.com/easybuilders/easybuild-easyblocks/pull/3485)

can you explain why not?
it works perfectly for easybuilders/easybuild-easyconfigs#22268
i just tested and --module-only also works.

[laraPPr]

Ah that does something else. In my case we don't put a valid date in version. So than we need all that stuff that is in the other pr. So mine should include what you need and than a whole lot of other stuff. Can you test my easyBlock with your easyconfig?