feat(cli): refined global upgrade commands

[chawyehsu]

Closes #914 , closes #943

What changes

1. Globalcli module codebase refactor, reusable definitions/functions are decoupled and moved to common.rs, doc comments are added for these definitions/functions.
2. Address List Old and New Version in pixi global upgrade / upgrade-all #914, refined pixi global upgrade/upgrade-all ergonomic output
   
3. Address pixi global upgrade downgrades packages to newest version in default channels #943, pixi global upgrade/upgrade-all now prevents package downgrade (by comparing versions before committing transaction) and will by default use the channel the package was installed from.
   
4. Globally installing package with no executables now prints a warning instead of throws out a miette error.
   before:
   
   after:
   

[ruben-arts]

Amazing! Thank you @chawyehsu! 🙏 It looks all good to me, and it works like a charm on my machine.

Small remark, I see we didn't update the list command in the documentation and you could possibly add a note about this new automatic channel selection to the documentation.

[chawyehsu]

cool!

you could possibly add a note about this new automatic channel selection to the documentation.

will do to update all the doc of global commands with another PR