chore: delegate all gitignore to root file (#1881)

Author: anshumanv

.gitignore

@@ -49,3 +49,17 @@ packages/**/*.map
 # cache
 .eslintcache
 
+# build files
+packages/**/lib
+packages/**/yarn.lock
+!packages/webpack-cli/lib
+
+# test output files
+test/js/*
+test/**/bin/
+test/**/**/bin/
+test/**/**/**/bin/
+test/**/**/binary/**
+test/**/dist
+test/**/**/dist
+test/**/**/**/dist