docs: Feature Flag Security and Compliance for Enterprises (#9528)

<!-- Thanks for creating a PR! To make it easier for reviewers and
everyone else to understand what your changes relate to, please add some
relevant content to the headings below. Feel free to ignore or delete
sections that you don't think are relevant. Thank you! ❤️ -->

## About the changes
<!-- Describe the changes introduced. What are they and why are they
being introduced? Feel free to also add screenshots or steps to view the
changes if they're visual. -->

[Preview
Link](https://unleash-docs-git-use-case-security-v2-unleash-team.vercel.app/feature-flag-tutorials/use-cases/security-and-compliance)

Created a use case on Feature Flag Security & Compliance for
Enterprises.
![Screenshot 2025-03-12 at 1 46
20 PM](https://github.com/user-attachments/assets/df4a03c5-b9bc-4456-becd-35587990a13f)


WIP in this PR:
- [x] Transferring diagrams from [Google
Doc](https://docs.google.com/document/d/1uA5Xb2NOdJjqwleicS_u088YXLCm81Y6norJzEYlwuE/edit?tab=t.0)
to this document
- [x] Add in remaining images/screenshots used as seen in Google Docs

<!-- Does it close an issue? Multiple? -->
Closes #

<!-- (For internal contributors): Does it relate to an issue on public
roadmap? -->
<!--
Relates to [roadmap](https://github.com/orgs/Unleash/projects/10) item:
#
-->

### Important files
<!-- PRs can contain a lot of changes, but not all changes are equally
important. Where should a reviewer start looking to get an overview of
the changes? Are any files particularly important? -->


## Discussion points
<!-- Anything about the PR you'd like to discuss before it gets merged?
Got any questions or doubts? -->

So far, we will consider Unleash Edge for data privacy topic for a quick
2nd iteration or altogether separate piece.

---------

Co-authored-by: Melinda Fekete <[email protected]>
Co-authored-by: Gastón Fournier <[email protected]>

Author: 3 people

website/docs/feature-flag-tutorials/use-cases/security-compliance.md

@@ -131,6 +131,11 @@ const sidebars: SidebarsConfig = {
                                     label: 'User Management, Access Controls, and Auditing',
                                     id: 'feature-flag-tutorials/use-cases/user-management-access-controls',
                                 },
+                                {
+                                    type: 'doc',
+                                    label: 'Security and Compliance',
+                                    id: 'feature-flag-tutorials/use-cases/security-compliance',
+                                }
                             ],
                         },
                         {