feat: Implement "Remove" action on exported apps to delete them

[iTrooz]

See #2059
Same feature but targeting next branch

[Copilot]

Pull request overview

Implements a “Remove” desktop action for exported app launchers so users can delete exported shortcuts, and extends distrobox list to optionally target a single container (used by the new remove action to decide whether to run in-container deletion or remove the desktop file directly).

Changes:

• Add a “Remove” desktop action to exported .desktop files in distrobox-export.
• Extend ListCommand.Execute / distrobox list to accept an optional [container-name] filter and return a not-found error when specified and missing.
• Update call sites and documentation/manpage to reflect the new list behavior.

Reviewed changes

Copilot reviewed 10 out of 10 changed files in this pull request and generated 7 comments.

Show a summary per file

File	Description
pkg/commands/list.go	Add ListOptions filtering and not-found error behavior.
internal/cli/list.go	Accept optional container-name arg and pass it to ListCommand.
internal/inside-distrobox/assets/distrobox-export	Append a “Remove” desktop action that triggers deletion logic.
pkg/commands/upgrade.go	Update to new ListCommand.Execute(ctx, opts) signature.
pkg/commands/stop.go	Update to new ListCommand.Execute(ctx, opts) signature.
pkg/commands/rm.go	Update to new ListCommand.Execute(ctx, opts) signature.
pkg/commands/generate_entry.go	Update to new ListCommand.Execute(ctx, opts) signature.
pkg/commands/generate_entry_test.go	Update test to new ListCommand.Execute(ctx, opts) signature.
docs/usage/distrobox-list.md	Document optional [container-name] argument.
man/man1/distrobox-list.1	Document optional [container-name] argument and add an example.

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[iTrooz]

Done

[iTrooz]

Just resolved the conflicts