Changes to Get all subtasks for a personal task

for the query request parameter page, default value 0 was added

for the query request parameter size, default value 20 was added

the data/tasks/items/customFields/items/fieldValue/items/value response's property type changed from object to no type for status 200

for the query request parameter page, the format was generalized from int32 to no format

for the query request parameter size, the format was generalized from int32 to no format

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