Add Wren Security projects (Wren:AM, Wren:DS, Wren:IDM, Wren:IG).

[ondrejurbanek]

Thanks for taking the time to suggest an addition to awesome-sysadmin!

To ensure your Pull Request is dealt with swiftly, please check the following (check the boxes [x]):

• Submit one item per pull request. This eases reviewing and speeds up inclusion.
• Your addition is Free software.
• You have searched the repository for any relevant issues or PRs, including closed ones.
• Any software you are adding is not already listed at any of awesome-selfhosted, dbdb.io.
• Software you are submitting is not your own, unless you have a healthy ecosystem with a few contributors (which aren't your sock puppet accounts).
• The file you are adding is formatted as described in addition.md.
• Demo links should only be used for interactive demos, i.e. not video demonstrations. If login credentials are required to access the demo, please link to the credentials directly.
• Comments and unused optional fields have been removed.
• The file you are adding uses kebab-case file naming, for example my-awesome-software.yml.
• Values for platform should match the platforms required to install and run the software.
• Any software project you are adding to the list is actively maintained.
• Any software project you are adding was first released more than 12 months ago.
• Any software project you are adding has working installation instructions.
• You understand that your Pull Request will be merged at least ~1 week after approval, depending on maintainers time.

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Please take some time to answer the following questions as best you can:

• Why is it awesome?

A complete identity stack for diverse IAM use cases, built on battle-tested enterprise projects with decades of proven production history—solutions no longer freely available elsewhere. Now actively maintained as open-source community projects, powering governments, institutions, schools, online services, and banks worldwide.

• Have you used it? For how long?

Yes. 7+ years.

• Is this in a personal or professional setup?

Professional.

• How many devices/users/services/... do you manage with it?

Some deployments deal with 100 000+ identitities.

• Biggest pros/cons compared to other solutions?

Enterprise-ready, standards-based, and built on open protocols.

• Any other comments about your use case, things you've found excellent, limitations you've encountered... ?

I've intentionally included 4 projects in a single commit as it's a part of the same project family.