[Concept Entry]: Add Affinity Diagram

[AnamolR]

Reason/inspiration (optional)

This entry introduces the Affinity Diagram, a collaborative UX research synthesis method used to organize insights and ideas. It’s especially helpful for clustering information during the research phase and aligning teams.

The entry includes:

• A definition of affinity diagrams
• When and why to use them
• How to build one
• Collaborative benefits and visual example

Entry Type (select all that apply)

• New Concept Entry for Existing Topic

Linked Pull Request

Closes PR #6577

Entry Type (select all that apply)

New Concept Entry for Existing Topic

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For Maintainers

• Labels added
• Issue is assigned

[AnamolR]

Hi @Sriparno08, please assign me to the PR that I've created #6577

[Sriparno08]

Hey @AnamolR, you’re assigned!

In addition to the documents linked in the description, please also look at the Contribution Guide. After creating a PR, the maintainer(s) (with the collaborator label) will add comments/suggestions to address any revisions before approval.