With the new drf-spectacular generated schema, need to add nulltype to the list of requirements to install
update copyright dates
Improve examples and client generated docs via drf-spectacular
Signed-off-by: Corey Shields <cshields@gmail.com>
Generate API documentation from OpenAPI specification. Also, update
outdated Sphinx documentation and include the generated docs.
Signed-off-by: Vasilis Tsiligiannis <acinonyx@openwrt.gr>