refactor(cli-utils): Refactor CLI entrypoint and remove exports

Summary

This basically aims to achieve three things:

Remove exports so we can revisit: https://github.com/0no-co/gql.tada/issues/134#issuecomment-2052513909
- I think we can either abstract into @gql.tada/internal (pretty complex tbf)
- or; we can just provide an api/ folder in cli-utils and make proper variants, so we still have some options in altering CLI outputs
Replace sade with clipanion to split up the commands and have some more QoL features available and abstracted away (sub commands, validation)
Add/Fix some more CLI options and add some stdout pipe options

This doesn't yet:

Remove warnings, swapping them out with errors and null/undefined return values here and there
Update the CLI outputs with new colorisers
Investigate/Fix why init has no styling
Resolve some todos and add extra CLI options
Add a custom help command / output