DLP-809: Add support for DLP payload logging rule/account settings

[OrionNebula]

Description

DLP recently added support for partial payload logging, which will log a portion region of matching requests and encrypt it using a user-provided public key. This PR adds support for setting that public key and enabling payload logging for individual rules.

Has your change been tested?

The change includes unit tests to cover the new functions. These tests match the actual responses given/URLs used by the public API.

Types of changes

• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to change)

Checklist:

• My code follows the code style of this project.
• My change requires a change to the documentation.
• I have updated the documentation accordingly.
• I have added tests to cover my changes.
• All new and existing tests passed.
• This change is using publicly documented (api.cloudflare.com or developers.cloudflare.com) and stable APIs.

[github-actions]

changelog detected ✅

[jacobbednarz]

thanks! a couple of small nitpicks but overall looking good!

[OrionNebula]

I think I've addressed your comments, if you want to take another look

[jacobbednarz]

thanks @OrionNebula ✨

[github-actions]

This functionality has been released in v0.62.0.

For further feature requests or bug reports with this functionality, please create a new GitHub issue following the template. Thank you!