approved these changes Sep 20, 2025

- Part of apple#515.
- Add titles to option groups for container
  subcommands.
- Order option groups and container subcommand
  options alphabetically.
- Shorten long valueNames to avoid option column
  overflow in help output where possible.
- Replace customShort and customLong with short,
  long, and shortAndLong where possible.
- Always place global options and arguments after
  alphabetized command-specific options.
- Rename RunCommand to ContainerRun and relocate it.
- Rename Executable to ContainerCLI.
- Update command reference doc.