Improved trace method

[Poseclop]

I feel the trace method should keep it's original intent to log the current stack trace (same as node.js defautl console.trace)

• Looks like some time ago the default behavior of LoggerService.trace was to call console.trace but this was removed as the stack trace shown was the one of console.trace.
• This PR aims to add back the stack trace, putting it on a higher level so that only 1 extra line is present in the stack trace (LoggerService.trace)
• If somehow the stack trace is not available, the method will revert to its previous behavior and only log the message and additional params
• I did not manage to create a unit test that would succefully check the exact stack trace added in _log method so I'm only making sure the message sent to the method is present in the stack trace. Maybe that can be improved
• Watchout, this change will obviously drastically change the output in console if users where using a lot of LoggerService.trace calls.