Archive dated agent builder samples and Add export copilot interactions (#412)

* Archive dated agent builder samples

Move dated Agent Builder samples into the archive, leave README stubs at the old paths, and remove their landing page cards.

Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>

* Add Export-CopilotInteractions script for Copilot Basic/Premium user interaction logs

Exports Microsoft 365 Copilot user-level interaction history via the Microsoft Graph beta /copilot/users/{id}/interactionHistory/getAllEnterpriseInteractions endpoint. Produces five CSVs (Users, Interactions, UsageByUserAppDay, UsageByAppFeatureDay, Errors) for Power BI / Excel reporting on Copilot adoption, with Basic vs Premium tier breakdowns.

Includes README with auth modes (client secret / certificate / interactive), required Graph permissions, parameter reference, and output schema.

Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>

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Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>

Author: soyalejolopez