Fully integrate H-Mat support with HMat-OSS and test_FEMBEM
- Add Hmat-OSS as a submodule of coreblas
- Add test_FEMBEM as a submodule of testings
- Add hmat testings to the CI
- Add documentation of hmat_z.c
[A venir] Mise en place de quotas sur nos instances GitLab. Plus d'information sur : https://doc-si.inria.fr/pages/viewpage.action?pageId=129728565
[Coming soon] Quotas installation on our GitLab instances. More information: https://doc-si.inria.fr/pages/viewpage.action?pageId=129728565