Add support for reportFiles option

[ianschmitz]

Closes #177.

This PR adds a new option reportFiles that behaves the same way as as ts-loader. When an array of file path globs are provided, it will use these globs to filter the ts/tslint diagnostics to only include those matching.

Here is an example using create-react-app where there are no errors in the reportFiles (you can see both __tests__/App.tsx and App.test.tsx have type errors):

And an example when there is an error in one of the reportFiles (which is src/App.tsx in this case):

/cc @Timer, @johnnyreilly

[johnnyreilly]

Brilliant! Thanks! ❤️

[Timer]

You've been killing it with these features, @ianschmitz! Thank you!

[mix0000]

Where this options is gone??? My setup dont works withour reportFiles

[piotr-oles]

Please use issues hook to filter-out issues that you're not interested in: https://github.com/TypeStrong/fork-ts-checker-webpack-plugin#plugin-hooks :)

[mix0000]

Yes, last night i did it with:

issue: {
  exclude: {
    file: "node_modules/**/*"
  }
}

[dasler-fw]

Can't find any migration guides. Can someone make it please?