feat(ionos): add IONOS Cloud as a new provider with 5 checks

[afp91-ua]

Context

The main motivation of this implementation is a final degree project to my university.

Description

Added IONOS Cloud as a new provider with 5 checks

Server / Compute Engine

• Check if servers have public IP
• Verify if volumes in servers have recent snapshots
• Check if firewalls' servers have FTP ports exposed to the internet
• Check if firewalls' servers have SSH port exposed to the internet

Object Storage S3

• Check if buckets have public access

Checklist

• Are there new checks included in this PR? Yes / No
  • If so, do we need to update permissions for the provider? Please review this carefully.
• Review if the code is being covered by tests.
• Review if code is being documented following this specification https://github.com/google/styleguide/blob/gh-pages/pyguide.md#38-comments-and-docstrings
• Review if backport is needed.
• Review if is needed to change the Readme.md
• Ensure new entries are added to CHANGELOG.md, if applicable.

API

• Verify if API specs need to be regenerated.
• Check if version updates are required (e.g., specs, Poetry, etc.).
• Ensure new entries are added to CHANGELOG.md, if applicable.

License

By submitting this pull request, I confirm that my contribution is made under the terms of the Apache 2.0 license.