storage ct can be reported in /ivp/meters measurementtype

[catsmanac]

Envoy can report a 3th CT for storage when used with a combiner box. Seen it with fw 8.2.127, but may exist before then one, not sure.

[
    {
        "eid": 704643328,
        "state": "enabled",
        "measurementType": "production",
        "phaseMode": "split",
        "phaseCount": 2,
        "meteringStatus": "normal",
        "statusFlags": []
    },
    {
        "eid": 704643584,
        "state": "enabled",
        "measurementType": "net-consumption",
        "phaseMode": "split",
        "phaseCount": 2,
        "meteringStatus": "normal",
        "statusFlags": []
    },
    {
        "eid": 704643840,
        "state": "enabled",
        "measurementType": "storage",
        "phaseMode": "split",
        "phaseCount": 2,
        "meteringStatus": "normal",
        "statusFlags": []
    }
]

And /ivp/meters/readings will have a 3th section for the storage CT