feat: provide functionality to list public ip-ranges

[h3adex]

Description

Adds functionality to list STACKIT public IP ranges.

The -o pretty flag does not render the output as a table, as this format wouldn't be useful. Instead, it joins all IP ranges with commas. This is helpful if you need to send the IP ranges to a customer or colleague.

E.g.

Checklist

• Issue was linked above
• Code format was applied: make fmt
• Examples were added / adjusted (see e.g. here)
• Docs are up-to-date: make generate-docs (will be checked by CI)
• Unit tests got implemented or updated
• Unit tests are passing: make test (will be checked by CI)
• No linter issues: make lint (will be checked by CI)

[rubenhoenle]

E.g.

Could we have this output with line breaks please?

This makes sense for users which want to work with tools like grep or e.g. fzf.

For reference, I personally love to work with CLIs like that: stackit public-ip ip-ranges list | fzf
And I think I'm not the only one 😄

[h3adex]

E.g.

Could we have this output with line breaks please?

This makes sense for users which want to work with tools like grep or e.g. fzf.

For reference, I personally love to work with CLIs like that: stackit public-ip ip-ranges list | fzf And I think I'm not the only one 😄

Very nice idea. Adjusted this PR and added this to the examples

[h3adex]

Sorry! Accidentally amended the changes.

[h3adex]

@Benjosh95 nice catches! Just rebased my pr and added your suggested changes