Added Smart contract design and UX Doc

[harshitdabra]

This PR is for the new documentation of "Smart contract design and UX". New content is added and is required to be merged.

fixes #13656

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[konopkja]

Hi @harshitdabra, was this generated by AI?

Using AI isn’t an issue as long as it’s done thoughtfully, but the draft could benefit from some editing to improve clarity and flow.

1. There are excessive sentences and paragraphs that don’t add much value and should be trimmed.
2. The first two sections can likely be removed to create a smoother structure.
3. Some topics feel too broad, and more detailed, practical insights would be helpful.

There are good starting points, but the overall length is a bit much, and the quality could be refined.

[harshitdabra]

Only 2-3 snippets were AI generated but overall tried to align in as per requirements. Will update another version shortly as per your review @konopkja

[konopkja]

Only 2-3 snippets were AI generated but overall tried to align in as per requirements. Will update another version shortly as per your review @konopkja

Ok, thank you. Happy to provide more in depth review and comments on the next version and get this ready to be published.

Also a side note, this should not replace content on "developers/docs/design-and-ux/" , rather it should be a new subpage in this section.

For example "developers/docs/design-and-ux/smart-contract-ux"

[corwintines]

@harshitdabra closed the new PR you opened for changes to this PR. Please keep any changes within this pull request so we have context of previous discussion.