DLP-1479: added support for Context Awareness in DLP profiles

[MattDavis00]

Description

Context Awareness was missing for DLP Profiles. This PR adds support for Context Awareness, and its ability to skip context awareness for files.

Has your change been tested?

Unit tests updated to match desired behaviour.

Types of changes

What sort of change does your code introduce/modify?

• 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 in cloudflare/api-schemas
  and relies on stable APIs.
  There is a sister ticket, DLP-1633 which focuses on adding this to our OpenAPI spec

[github-actions]

changelog detected ✅

[github-actions]

This functionality has been released in v0.90.0.

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