fix(starter): ensure linebreak-style is disabled

See airbnb/javascript#1224,
xojs/eslint-config-xo#35, and
eslint/eslint#7823 for the sad details.

This doesn't completely solve the greater issue, but should at least
help a little bit to ensure new Electron projects can be used on
Windows

tmpl/_eslintrc

@@ -3,6 +3,7 @@
   "rules": {
     "import/extensions": 0,
     "import/no-extraneous-dependencies": 0,
-    "import/no-unresolved": [2, { "ignore": ["electron"] }]
+    "import/no-unresolved": [2, { "ignore": ["electron"] }],
+    "linebreak-style": 0
   }
 }