Support auto-expanding external logs (ie. logs coming from node modules)

[ArtemGovorov]

No description provided.

[mighdoll]

I often write some custom pretty printers for particular domain objects. It'd be nice to be able to see those custom log statements quickly when iterating, but multi-line output is folded by default. A UI or config option to auto-expand would fix this.

Note that //?+ isn't a great workaround in some common cases. First you have to change pretty printing console.log to instead just produce a string, but that may not be possible if the pretty print logging code is in a package. Second, logging a multi-line string in wallaby often adds quite a bit of formatting to show + 'foo \n