Configure shell env timeout to avoid PATH problems on VS Code update

[karlhorky]

On VS Code Update, errors appear:

• ESLint client: couldn't create connection to server. #1754 (comment)

Instead, suggest users configure a longer shell environment resolution timeout of 30 seconds via "application.shellEnvironmentResolutionTimeout": 30, as mentioned here:

• ESLint client: couldn't create connection to server. #1754 (comment)

[dbaeumer]

This sounds like a pre-requisite. I would just point to the setting saying something like if you see the message Unable to resolve your shell environment in a reasonable time. use the setting to enlarge the timeout

[karlhorky]

@dbaeumer thanks for the feedback.

What do you think about putting it in a "NOTE" bullet?

• 3c335b9 (#2087)