Fix default log levels

[javagl]

The default log levels had been wrong, limiting the level that could be used for the console to info.

• The globalLogLevel is the level that the logger itself uses
• The consoleLogLevel and fileLogLevel can be imagined as additional "filters" that are applied "behind the logger"

So previously, the level for the console target was
const consoleLogLevel = "info";
and this value cannot be changed. So even when the logger was set to trace afterwards, the console still displayed nothing more than info.