Changes to Register a file upload

added the new message enum value to the file/source response property for the response status 201

added the non-success response with the status 400

added the non-success response with the status 402

added the non-success response with the status 422

added the non-success response with the status 500

added the optional property file/display_url to the response with the 201 status

added the optional property file/message_id to the response with the 201 status

added the optional property file/phone_id to the response with the 201 status

the size_bytes request property's max was decreased to 104857600.00

endpoint added