Implement bindings for debug-interface to use builtin console

[kevinkassimo]

Background: this was brought up in https://twitter.com/KevKassimo/status/1294695571446312961

It seems that we currently don't have bindings to debug-interface.h APIs, such that things like SetConsoleDelegate(to attach handlers for V8 builtin console) is not directly accessible. https://source.chromium.org/chromium/chromium/src/+/master:v8/src/debug/debug-interface.h;l=226-227;drc=459283200c38b18e13566549532ad4d7121451ef

Sample usage of this specific API could be found here: https://source.chromium.org/chromium/chromium/src/+/master:v8/src/d8/d8.cc;l=2312;drc=7e9322335ee659e70c0239fc402db7d86f4b56d6

(I still cannot experiment with anything myself yet, so maybe someone else can take the work if they want to)

[bnoordhuis]

debug-interface.h is a private header, it's not part of the public API. It's used by d8, but d8 uses all kinds of internal V8 APIs.

I can't quite divine from the twitter thread what the actual problem is (cc @MylesBorins, maybe you can clarify) but if you want to intercept console messages, the V8InspectorClientImpl::console_api_message() method I added in #252 lets you do that.

[MylesBorins]

So at a very very high level all I want to do is make the console object actually print something (wild I know). I can think of a couple different creative ways to make it work... but if possible I would like to do it idiomaticaly.

[piscisaureus]

I think you might have to implement your own Console object.
AFAIK the built-in console object only forwards messages to the chrome inspector console.