lldap: add catalog app

[mreid-tt]

App Addition

• I have opened an issue to discuss this app addition before submitting this pull request.

Description

Adds LLDAP to the community train.

LLDAP is a lightweight LDAP directory server with a built-in web interface for managing users, groups, and application credentials.

App Information

• Upstream: https://github.com/lldap/lldap
• Documentation: https://github.com/lldap/lldap/tree/main/docs
• App Version: 0.6.2

Testing

Tested locally with:

• basic-values.yaml (Docker compose harness via ./.github/scripts/ci.py --app lldap --train community --test-file basic-values.yaml)

All tests passed successfully.

Icons and Screenshots

Please upload the following to the CDN:

• Icon: https://cdn.jsdelivr.net/gh/selfhst/icons@main/svg/lldap-light.svg
• Screenshot 1 (optional): not yet provided

Special Notes

• First-time setup instructions: Default admin credentials are shown after install (username admin, password ChangeMe!). Update them immediately via the web UI. Ran with seeded secrets to satisfy lldap requirements.
• Any other important information: Package preloads LLDAP_KEY_FILE="" to silence upstream warnings when using a seed; secrets are randomly generated by SCALE for production installs.

Checklist

• App runs successfully locally
• Only modified files under /ix-dev/ or /library/
• README.md included
• Multiple test scenarios tested (initial install + admin login via Docker harness)
• questions.yaml has clear descriptions and follows structure of existing apps
• All automated CI checks pass (pending upstream pipeline after PR submission)