OPC-US client: add support for x509 and user+password authentication.
Commit for backup not including tests since encrypted OPC-UA test are still not valid.
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<SVGHMI xmlns:xsd="http://www.w3.org/2001/XMLSchema" OnWatchdog="echo Watchdog for {name} !" WatchdogInitial="10" WatchdogInterval="5" EnableWatchdog="true" Path="{name}" OnStart="chromium --disable-gpu --new-window --user-data-dir=. {url}"/>