Test: ESLint autofix

[dbaeumer]

• @bgashler1
• Install the latest ESLint extension.
• create a workspace folder and install eslint into it (npm eslint)
• init eslint using eslint --init
• set some rules that have auto fixes (see http://eslint.org/docs/rules/)
• create a js file and violate some auto fixable rules:
• ensure that:
  • you get a light bulb on these errors. You have to set the cursor at the beginning of the marker
  • the light bulb lets you fix this error, all equal errors or every error in the file.
  • ensure that the fixes are applied correctly and that the fixes don't harm the file

Disclaimer: If at a position two fixes exists then only one is applied since ESLint generates overlapping text edits which the extension filters again.