Description

Summary here is:

• Datasets have moved, so it seems like this file should too.
• Workflow for adding new datasets will be more seamless with the file living with kedro-datasets.

See more on the origin of this issue here: #4196.

Context

Alleviate maintenance burden by having these schema live with the datasets themselves.

Possible Implementation

• Move it on over!
• Add clause on "update json schema if necessary" to PR template.

Possible Alternatives

None considered!