The sound distributed version control system

Add global `no_prompt` flag

This removes a hack that hard-coded pijul_interaction to always be in a terminal context, and should now properly support the --no-prompt flag anywhere in the codebase. There might be some bugs in code paths where --no-prompt is active, the best way to address those is a proper re-write of the test suite.

Created by  finchie  on August 17, 2023
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