Inform users that choose webpack to install problem matcher extension

[miguelsolorio]

Originally from #298

I created a brand new extension using the yo code command and when running it (with no modifications) I notice that I get a The Task 'npm: watch' cannot be tracked. Make sure to have a problem matcher defined. error and am not sure if this is a task issue or a generator problem.

CleanShot.2021-09-28.at.10.10.34.mp4

Version: 1.61.0-insider (Universal)
Commit: 214ac689ca9874a8a4be386f73d5cb60e15af25e
Date: 2021-09-28T05:14:06.244Z
Electron: 13.4.0
Chrome: 91.0.4472.164
Node.js: 14.16.0
V8: 9.1.269.39-electron.0
OS: Darwin arm64 20.6.0

[alexr00]

@misolori did you choose to webpack your extension when going through the generator?

[miguelsolorio]

@alexr00 yes I did, anything else I can do?

[alexr00]

Looks like the default build task when you choose the webpack options requires that you install the Typescript + Webpack Problem Matchers (eamodio.tsl-problem-matcher) extension. Do you have that installed?

[miguelsolorio]

I don't have that installed, installing it makes the problems go away. Maybe this should be mentioned in the generator or somewhere else as I don't think people would be able to figure that out on their own?

[miguelsolorio]

Updated the title to reflect the issue

[aeschli]

I added a message to the generator.