Task: Implement CLI list/add/remove commands for book

Create the CLI support for book in projects/ores.cli — options header and source, entity parser, and wire up list/add/remove subcommands — mirroring the pattern of add_country_options and add_currency_options so book is manageable from the command line.

• add_book_options.hpp/cpp added to ores.cli.
• books_parser.cpp added to entity_parsers/.
• list subcommand implemented and working.
• add subcommand implemented and working.
• remove subcommand implemented and working.
• All subcommands call the service via NATS (not direct repository access).

(Implementation strategy. Written when work starts; key decisions are distilled into the parent story's * Decisions at close, but the plan itself stays — it is the historical record of what we did.)

Abandoned in favour of the "CLI commands — top-level commissioning story" capture (doc/agile/product_backlog/inbox/cli_commands_codegen_top_level_story.org, id 469958E3-B249-4D4C-95A9-E7CDB703F0C0), which explicitly supersedes per-commission CLI tasks: ores.cli has no codegen profile, and CLI commands should be established/templatized once as a horizontal layer rather than hand-written per entity as this task would have done. No CLI code was written for book.