Changes to Get asset metrics breakdown

added the new optional request property reference_asset_ids

added the new optional request property venues

added the new asset+venue enum value to the request property group_by

added the new market-sector+venue enum value to the request property group_by

added the new reference-asset enum value to the request property group_by

added the new venue enum value to the request property group_by

added the new venue+chain enum value to the request property group_by

added the optional property data/items/reference_asset to the response with the 200 status

added the optional property data/items/reference_asset_id to the response with the 200 status

added the optional property data/items/venue_data_id to the response with the 200 status

added the optional property data/items/venue_product_id to the response with the 200 status

the request property interval became optional

the interval request property default value 7d was added

added the new 1095d enum value to the request property interval

added the new 1825d enum value to the request property interval

added the new ytd enum value to the request property interval