Changes to List Agent Files

for the query request parameter limit, default value was changed from 20 to 100

added the new optional query request parameter after

added the new optional query request parameter before

added the new optional query request parameter order

added the new optional query request parameter order_by

query request parameter cursor was deprecated

query request parameter limit list-of-types was widened by adding types null

for the query request parameter limit, the type was generalized from integer to no type