Fixes #

Requirements

All new code should be covered with tests, documentation should be updated. CI should pass.

Description of the Change

This patch enhances the Aptly bash‐completion script by collecting and
reusing any global options passed to aptly so that completions work
correctly when users supply flags such as --config, --architectures,
--gpg-provider, etc.

Key changes:

• Introduce aptly_global_opts array to accumulate recognized global options.
• Implement path‐completion (_filedir) for options in options_with_path_arg.
• Fix typo where compopt was misspelled as comptopt.

Checklist

• unit-test added (if change is algorithm)
• functional test added/updated (if change is functional)
• man page updated (if applicable)
• bash completion updated (if applicable)
• documentation updated
• author name in AUTHORS