Create CLI tool for sample assembly creator

Primary function: take in User options like sample geometry, container geometry, sample environment geometry, and / or sample kernel options to make a sample.xml to run in the sample simulator tool

TODOs:

• Setup cyclopts dependency in packageL docs
• Define CLI to add / append multiple scatterers objects AND define CLI to have nested commands for the scatterer (i.e. geometry + material OR pre-defined)
  • Look at https://cyclopts.readthedocs.io/en/latest/groups.html for setting this up using list of Scatterer objects
• Test using use cases:
  • scatter defined using geometry=cylinder + material set using S(Q) file
  • scatter defined using geometry=hollow-cylinder + material set using pre-defined vanadium material name
  • scatter defined using predefined PAC06
  • two scatterers defined: one using geometry + material and the other used pre-defined