feat(cli): add --help and --version to the standalone binary

[benjamineckstein]

Problem. --help exits 1 (no real help branch); --version does not exist; version drift is invisible (manifest 0.13.0 while the package is on 0.14.0).

Evidence. src/Console/StandaloneApplication.php:45-54 run() only branches check/scaffold/generate.

Fix. Handle --help (print usage, exit 0) and --version before subcommand dispatch; for --version, read Composer\InstalledVersions::getPrettyVersion('codewithagents/openapi-laravel') so it never drifts from the published tag.

Done when. --help exits 0 with usage; --version prints the installed version.

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Filed from a repo-wide improvement audit; every claim was adversarially verified against source.