feat(entra): add new check entra_thirdparty_integrated_apps_not_allowed

[MarioRgzLpz]

Context

App registration allows users to register custom-developed applications for use within the directory.

Third-party integrated applications connection to services should be disabled unless there is a very clear value and robust security controls are in place. While there are legitimate uses, attackers can grant access from breached accounts to third party applications to exfiltrate data from your tenancy without having to maintain the breached account.

Description

Added check entra_thirdparty_integrated_apps_not_allowed with metadata and respective unit tests.

Checklist

• Are there new checks included in this PR? Yes
  • If so, do we need to update permissions for the provider? Yes, add Policies.Read.All
• 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.

License

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