Create a new endpoint for defining the valid filters for metadata filtering for a particular asset type

[marcel-vesely-kinit]

This endpoint should return a schema as to how an end user can define their own manual metadata filters. Without this endpoint, neither an end user nor a third-party applications, e.g., RAIL, can have an idea of what metadata fields and their respective constraints are applied to a specific asset type.

For instance as an example, Dataset asset type may support the metadata filtering on the following fields with individually specified value constraints. The goal of this endpoint is to clearly and precisely define what these fields are:

• task_type: can only be a value from a list of 30 predefined task types
• languages: can only be a string of size 2
• size_in_mb: only non-negative values, float type in a range of [0, 1e+9]