Changes to Campaign Roster Picker Endpoint

query request parameter search list-of-types was narrowed by removing types string

for the query request parameter search, the type of property anyOf[subschema #1]/ was specialized from string to array

the response property total became optional for the status 200

response property total list-of-types was widened by adding types null to media type application/json of response 200

added the new optional query request parameter cursor

added the optional property items/items/has_email to the response with the 200 status

added the optional property next_cursor to the response with the 200 status