📈 (repo) [DSDK-368]: Add backstage metadata

[mbertin-ledger]

📝 Description
Add catalog info file in order to have data that will be gathered by backstage
Also add some new assets for sample app
Update documentation

❓ Context
JIRA or GitHub link: DSDK-368

Feature:

✅ Checklist
Pull Requests must pass CI checks and undergo code review. Set the PR as Draft if it is not yet ready for review.

• Covered by automatic tests
• Changeset is provided

Impact of the changes:

• The code aligns with the requirements described in the linked JIRA or GitHub issue.
• The PR description clearly documents the changes made and explains any technical trade-offs or design decisions.
• There are no undocumented trade-offs, technical debt, or maintainability issues.
• The PR has been tested thoroughly, and any potential edge cases have been considered and handled.
• Any new dependencies have been justified and documented.

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Name	Status	Preview	Comments	Updated (UTC)
device-sdk-ts-sample	✅ Ready (Inspect)	Visit Preview	💬 Add feedback	Dec 12, 2024 3:02pm

1 Skipped Deployment

Name	Status	Preview	Comments	Updated (UTC)
doc-device-management-kit	⬜️ Ignored (Inspect)	Visit Preview		Dec 12, 2024 3:02pm

[github-actions]

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