Changes to expoAuthDiscord

the request property code became required

the request property code_verifier became required

the request property device_id became required

the request property redirect_uri became required

api operation id expoAuthDiscord was added

added the non-success response with the status 409

removed the non-success response with the status 400

removed the non-success response with the status 500

added the optional property user/is_admin to the response with the 200 status

the response property access_token became required for the status 200

the response property refresh_token became required for the status 200

the response property user became required for the status 200

the response property user/auth_methods became required for the status 200

the response property user/avatar_url became required for the status 200

the response property user/user_id became required for the status 200

the response property user/username became required for the status 200