docs: rewrite show
section as two separate modes for clarity
#9752
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I feel that from a user's POV,
poetry show
has two fairly separate modes, 'list packages' and 'single package info'.This PR separates them in documentation, which I feel is clearer.
For example it shows that 'single package info' only has one useful option,
--tree --why
.(I think the code should probably be refactored to better separate the cases and drop a few interactions between but that's one for another day.)
It adds missing example for the `list packages' mode.
It explains what 'poetry show' actually tells you, resolving my very old discussion question What does `poetry show` actually tell me? #7311.
It also improves ordering of options and wording.
It does not attempt to cover all the colour coding that may appear in
show
output. To be honest it's inacesssible design to use colour alone to convey information.[TODO: check CLI --help text and error messages]
Pull Request Check List
Resolves: #7311