SVGHMI: Add "lang" permament persistent HMI_LOCAL variable to reflect selected language, apply stored language choice at startup and make it always subscribed to a pseudo widget (as for hearbeat) that apply language choice when it changes.
{
"ID": "wamptest",
"active": true,
"protocolOptions": {
"autoPingInterval": 60,
"autoPingTimeout": 20
},
"realm": "Automation",
"url": "ws://127.0.0.1:8888"
}