Add Scalability/FileUploads cop

What does this MR do?

This cop prevents you from using File type parameters in API, it points you to the development documentation about workhorse file acceleration.

This is not supposed to be merged. It's just a test to run the new Cop also on EE files.

Please refer to gitlab-foss!32864 (merged)

Does this MR meet the acceptance criteria?

Conformity

• Changelog entry
• Documentation created/updated or follow-up review issue created
• Code review guidelines
• Merge request performance guidelines
• Style guides
• Database guides
• Separation of EE specific content