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                        [FEATURE] Flag for `exo env` to show origin of variables
Is your feature request related to a problem? Please describe.
exo env prints variables in .env file format, but that loses some potentially important debugging information that the GUI already supports: The origin of each variable!
Describe the solution you'd like
Add a flag to print with a tabwriter that prints three columns: name, value, origin. Ideally with a header column too, prefixed by a #.
Suggested flag: -v and --verbose.
Describe alternatives you've considered
Could include # comments before each variable and stay in env format, but we'd still want this behind a flag.
Additional context
cc @finnigantime