fix(Node): ignore yarn logs

This adds ignores for the `yarn-debug.log*` and `yarn-error.log*` files sometimes produced by the [Yarn package manager](https://yarnpkg.com).

Node.gitignore

@@ -2,6 +2,8 @@
 logs
 *.log
 npm-debug.log*
+yarn-debug.log*
+yarn-error.log*
 
 # Runtime data
 pids