Debug CodeLens doesn't use jest.pathToJest

[seanpoulter]

Steps to Reproduce

• Clone git clone https://github.com/seanpoulter/vscode-jest--193
  • This is a bare repo bootstrapped for issue Not working properly with create-react-app-typescript #190 with "jest.pathToJest" set and a failing test
• Open the repo in Visual Studio Code
• Click on the Debug CodeLens

Expected Behavior

• Debug the test
• JestExt#resolvePathToJestBin() can handle more complicated commands like npm test --

Actual Behavior

[stephtr]

This is now by design (#287). One reason therefore is that simply running npm test isn't enough, one needs additional knowledge.