Add Tersoff potentials
Related to ase!3653 (merged)
This MR adds LAMMPS Si.tersoff and SiC.tersoff due to the following two reasons:
- To remove
Si.Tersofffrom the main ASE repo to avoid GPL license issue in LAMMPS. - To prepare for the tests for multi-element cases for
Tersoff, which I think has a bug in ASE 3.25.0.
Edited by Yuji Ikeda