Add results-feed Dart Angular app

This web client-side app written in Dart Angular fetches
and displays changed Dart CI testing results from a
Firestore database, which gets it from pub/sub messages.

Change-Id: I5a5e1fb377e02c48f710d7174155c7a7cf8fe427
Reviewed-on: https://dart-review.googlesource.com/c/dart_ci/+/113880
Reviewed-by: Jonas Jensen <jonasfj@google.com>
Reviewed-by: Alexander Thomas <athom@google.com>
26 files changed
tree: 712721006c0e811ceb8311405ca2947f64da042c
  1. results_feed/
  2. .firebaserc
  3. .gitignore