Update quickstart to rp2 blinky

Change-Id: If2776ca18cf100b132a23c10f3d99c1840256441
Reviewed-on: https://pigweed-review.googlesource.com/c/pigweed/quickstart/bazel/+/228453
Lint: Lint 🤖 <android-build-ayeaye@system.gserviceaccount.com>
Reviewed-by: Armando Montanez <amontanez@google.com>
Commit-Queue: Taylor Cramer <cramertj@google.com>
diff --git a/AUTHORS b/AUTHORS
new file mode 100644
index 0000000..b13fcec
--- /dev/null
+++ b/AUTHORS
@@ -0,0 +1,7 @@
+# This is the list of Pigweed authors for copyright purposes.
+#
+# This does not necessarily list everyone who has contributed code, since in
+# some cases, their employer may be the copyright holder.  To see the full list
+# of contributors, see the revision history in source control.
+
+Google LLC