API access for location object's group designation and creation.
api_code : api.common.group.set.add
HOST : http://cms.catchloc.com/api.partner.common.php
Method : GET
Protocol : JSON
            api : api_code
            api_key : Client's partner key
            timestamp : Unix timestamp
            cert_key : Certification key
            group_name : Group name, URL ENCODE
            
            result : RESULT
            group_key : Created group's key
            message : result code
            
            ===== Request =====
            http://cms.catchloc.com/api.partner.common.php?
            api=api.common.group.set.add&api_key=xxxxx&
            timestamp=1513319595&
            cert_key=xxxxx&
            group_name=%ED%85%8C%EC%8A%A4%ED%8A%B8+%EA%B7%B8%EB%A3%B9%EC%9D%B4%EB%A6%84
            ===== Response =====
            - Success
            {
              "result":"OK",
              "group_key" : "*******************",
              "message":"SUCCESS : GROUP_CREATE"
            }
            - Fail
            {
                "result":"FAIL",
                "message":"Reason"
            }