Changes to Add a platform admin

the endpoint scheme security bearerAuth was added to the API

the endpoint scheme security denApiKey was added to the API

api tag Admin added

added the media type application/json for the response with the status 200

added the non-success response with the status 400

added the non-success response with the status 401

added the non-success response with the status 403

added the non-success response with the status 409

endpoint added