title: ng-mocks error: MockBuilder/test.deep.spec.ts is missing from the TypeScript compilation
body: <p>I simply the ng-mocks module like I have to previous projects but today I am getting the following error.:</p>
  <pre><code>Firefox 78.0 (Linux x86_64) ERROR
    An error was thrown in afterAll
    Error: Module build failed (from ./node_modules/@ngtools/webpack/src/index.js):
    Error: ....node_modules/ng-mocks/examples/MockBuilder/test.deep.spec.ts is missing from the TypeScript compilation. Please make sure it is in your tsconfig via the 'files' or 'include' property.
    The missing file seems to be part of a third party library. TS files in published libraries are often a sign of a badly packaged library. Please open an issue in the library repository to alert its author and ask them to package the library using the Angular Package Format .
  </code></pre>