Ignore .dart_tool and .packages in pkg dir
Ignore .dart_tool and .packages in pkg dir

Change-Id: I053668459b21e10e2a3f7343296f913f82118768
Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/214309
Auto-Submit: Kevin Moore <1d6e7d10d051cf619c5282da3c28fd8d3e0a65a4@google.com>
Commit-Queue: Konstantin Shcheglov <09e4d7516628963212bf4aace2f97603d2b706e4@google.com>
Reviewed-by: Konstantin Shcheglov <09e4d7516628963212bf4aace2f97603d2b706e4@google.com>

dart-lang/sdk,dart-lang/sdk,dart-lang/sdk,dart-lang/sdk,dart-lang/sdk,dart-lang/sdk,dart-lang/sdk,dart-lang/sdk