Add Delivery page

[deboragracio]

https://github.com/fiskaltrust/engineering/issues/1124

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Description

Add Delivery new page to the Experience Middleware section.

[deboragracio]

@copilot resolve the merge conflicts in this pull request

[github-actions]

⚠️ CLA Signature Required

Thank you for your contribution! Before we can merge this PR, the following contributor(s) need to sign our Contributor License Agreement:

• @Copilot

How to sign

Please read the CLA document and then comment on this PR with the following text:

I have read the CLA Document and I hereby sign the CLA

[deboragracio]

I have read the CLA Document and I hereby sign the CLA

[Copilot]

@copilot resolve the merge conflicts in this pull request

Resolved — I merged origin/main into this branch and fixed the conflict in poscreators/middleware-doc/possystem-api/introduction.md (commit f301335). There are no UI changes in this update.