chore: add catalog-info.yaml and LICENSE

[czirker]

Summary

• Adds missing catalog-info.yaml and LICENSE

Task Reference

• Jira: https://chb.atlassian.net/browse/ES-2712

Made with Cursor

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Note

Low Risk
Adds repository metadata (catalog-info.yaml) and a LICENSE file only; no runtime or build logic changes.

Overview
Adds an ISC LICENSE to formalize project licensing.

Adds catalog-info.yaml to register auth-sdk in Backstage (component metadata, tags, ownership, and TechDocs reference).

^{Written by Cursor Bugbot for commit ed474b7. This will update automatically on new commits. Configure here.}

[ch-snyk-sa]

✅ Snyk checks have passed. No issues have been found so far.

Status	Scanner	Critical	High	Medium	Low	Total (0)
✅	Open Source Security	0	0	0	0	0 issues
✅	Licenses	0	0	0	0	0 issues
✅	Code Security	0	0	0	0	0 issues

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