Changes to Create a mailbox API key

the allOf[subschema #2]/data/credential response's property type changed from no type to object for status 201

removed MailboxCredential subschema #2 from the allOf[subschema #2]/data/credential response property allOf list for the response status 201

added the required property allOf[subschema #2]/data/credential/imap_port to the response with the 201 status

added the required property allOf[subschema #2]/data/credential/key_prefix to the response with the 201 status

added the required property allOf[subschema #2]/data/credential/key_suffix to the response with the 201 status

added the required property allOf[subschema #2]/data/credential/public_id to the response with the 201 status

added the required property allOf[subschema #2]/data/credential/secret to the response with the 201 status

added the required property allOf[subschema #2]/data/credential/server to the response with the 201 status

added the required property allOf[subschema #2]/data/credential/smtp_port to the response with the 201 status

added the required property allOf[subschema #2]/data/credential/username to the response with the 201 status

the endpoint scheme security oauth2 was added to the API

added the non-success response with the status 413

added the non-success response with the status 503