Add raw cookie id to AdCloud's XE extension

## What are the schemas that are affected by the issue
AdCloud's extension of ExperienceEvents

## What are examples of products that are impacted by the issue
None at the moment as it's not being exported.

Start by locating AdCloud's extension of the ExperienceEvents schema and reviewing how its existing fields are defined. Add the raw cookie id to the affected schema, then verify that the schema remains valid and that the new field appears as intended.

Written by the indexing model from the issue text.