Add a subject REST Endpoints

Data Capture/Subjects/Add a subject
The operations from the Data Capture/Subjects/Add a subject category.
[Deprecated]: V1
Method: post
Path: /ec-dc-svc/rest/v1/studies/{studyId}/{mode}/subjects
[Deprecated]: V2.0
Method: post
Path: /ec-dc-svc/rest/v2.0/studies/{studyId}/{mode}/subjects
[Deprecated]: V4.0
Method: post
Path: /ec-dc-svc/rest/v4.0/studies/{studyId}/{mode}/subjects
V3.0
Method: post
Path: /ec-dc-svc/rest/v3.0/studies/{studyId}/{mode}/subjects