Logs

**READ** (GET)
`/logs` for all logs
`/logs/:deviceId` to filter logs by device ID

**WRITE** (POST)
`/logs` with the following request body:
```
{
    "type": "ACTION",
    "deviceId": 775947240,
    "newValue": "ON"
}
```

Is it returning an error code 5xx or only a string containing 'ERROR'?