The assistant adds files unlocked, even when git-annex is otherwise
configured to add them locked.

There are good reasons for that different behavior to be the default,
but it would be worth having a config to override that.

See here for some motivating use cases
<https://git-annex.branchable.com/forum/Is_there_a_way_to_have_assistant_add_files_locked__63__/>

[[!tag projects/repronim]]

> [[done]], git config annex.assistant.allowunlocked to true,
> and then configure annex.addunlocked as desired. --[[Joey]]
