Tay update

[tpreynolds]

Beginning of overhaul to make this repo a more generic satellite sim.

• Merged in several changes to libraries in the HS1 repo (have not done all yet)
  • state estimation library
  • sun sensor model / processing library
• Updated fsw_params and sim_params structs to reflect HS1 changes, and all init files are more readable
  • updated all libraries to reference those parameters that changed names
• Identified several desired changes in new issues/projects to continue the work