Add products taxonomy to improve findability

[kenanlv]

Adds docs products taxonomy to the repo to improve findability experiences (onsite search, recommendations and others)

Product Label	Products
SharePoint	https://authoring-docs-microsoft.poolparty.biz/devrel/9d7be3ef-f27c-4c7f-9eba-67c3cd429995

[VesaJuvonen]

Docs Build status updates of commit 49ff25b:

✅ Validation status: passed

File	Status	Preview URL	Details
SP-Framework/docfx.json	💡Suggestion		Details

SP-Framework/docfx.json

• Line 48, Column 31: [Suggestion-ms-author-invalid] Invalid value for 'ms.author', 'spdevdocs' is not a valid Microsoft alias.

For more details, please refer to the build report.

Note: Broken links written as relative paths are included in the above build report. For broken links written as absolute paths or external URLs, see the broken link report.

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