Small Movement Nits

• Use length of subsystem for subsystem ID? Keep rand optional?
• refresh_vtxos tab became spaces (lib.rs#275)
• get_movements -> get_all_movements
• Remove use::thiserror::Error, specify the full path instead
• subsystems.into_iter
• Remove format_err uses
• Stick to one movement per arkoor package. Remove comment.
• Add comment about adding support for cancelling exits