(🎁) add a show or info subcommand to show details about a package, both locally and on pypi

[KotlinIsland]

uv pip show is buried within uv pip, and it doesn't show information for a package that isn't installed

compare that to something like npm show, which will show you the details from the package registry:

> npm show basedpyright

[email protected] | MIT | deps: none | versions: 961
a pyright fork with various type checking improvements, improved vscode support and pylance features built into the language server
https://github.com/detachhead/basedpyright#readme

bin: pyright, basedpyright, pyright-langserver, basedpyright-langserver

dist
.tarball: https://registry.npmjs.org/basedpyright/-/basedpyright-1.24.0.tgz
.shasum: d57ac027c80f3fa7986df595b8ffb75fa3d60f13
.integrity: sha512-5mnMiZ2nN4vkP+gOOR3cLcfOY547lG6t3bGb7hR6LUFjbZzNvyDClTpcDJptmbP4Ehejpw5VY8VQH/8Lsnu3IQ==
.unpackedSize: 24.2 MB

maintainers:
- detachhead <[email protected]>

dist-tags:
latest: 1.24.0                                          canary: 1.24.0-688bc8d7a33624f323c8f567452f9aa8e5a5b847

published 15 hours ago by detachhead <[email protected]>

i wanted this because i needed to know what extras beautifulsoup4 has, and needed to dig into their source code