Partner Center connector - new fields and deal registration actions (#2130)

* Update apiDefinition.swagger.json

* Latest changes

* fix format warning

* X-Caller_Id should be optional

* Update apiDefinition.swagger.json

Review changes -
->Added reg status and sub status fields.
->Update the fields descriptions as per api's details available on Microsoft public site.
->Remove submission related fields.
->Mark registration status field as read only.
->Remove offerId from root.
->Use Enum values in Create deal registration model.
->Create a separate model for update deal registration.
Create a separate action for update deal registration.

* Update apiDefinition.swagger.json

* Update apiDefinition.swagger.json

Add deprecate text in Update a referral by Id action

* Update apiDefinition.swagger.json

Connector status keep as Preview and UpdateReferralById deprecated keep as false but deprecated word in description.

* Update apiDefinition.swagger.json

update deal registration success message.

* Update apiDefinition.swagger.json

added title for registration object

Author: 94farhan