Debug adapter can pass a 'More Information' url to the frontend

[weinand]

• any platform @chrisdias

for #3448

Error messages in the debug protocol have been extended to support a 'More Information' url and a corresponding label. VS Code uses this optional information to show a button in error notifications.

Currently this is used in node-debug when a launch configuration contains relative paths.

Verify that the button is shown in error notifications and that the correct "Common Error" web page opens.

[isidorn]

@chrisdias I would create a seperate issue instead of commenting here. Are you done testing this item, I do not see it checked off?

[chrisdias]

@isidorn sorry, i moved the issue and referenced this test item. also, i checked it off, i'm done testing.

[isidorn]

Great!