Add Criteo support to amp-ad

[nicolastruchi]

add support to amp-ad for the Criteo type.

Intent to implement: #2296

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[cramforce]

Please add a link to your own docs.

[nicolastruchi]

done

[cramforce]

This is good to go. Please rebase and push again. Thanks!

[nicolastruchi]

I signed it!

Signed with Corporate CLA for the company: Criteo SA