Treat process.exit() the same as throw in code path analysis rules (node/process-exit-as-throw)

Fixes: standard/standard#699

Author: feross

eslintrc.json

@@ -181,6 +181,7 @@
     "import/no-webpack-loader-syntax": "error",
 
     "node/no-deprecated-api": "error",
+    "node/process-exit-as-throw": "error",
 
     "promise/param-names": "error",