Add support for restart from latest checkpoint folder in any path

[isriva]

Add support to provide a restart option such as "restart PATH/*", where the program will look for the checkpoint folder in PATH, and the wildcard * would search and use the latest checkpoint folder. This would enable easy daisy-chaining long jobs with dependency restarts without baby-sitting them, especially on systems with short wall times. A similar capability exists in LAMMPS, so that could be adopted here.