Add annotation processor for @ChangeId.

Located in the new project as described in go/gating-and-logging.
Test: locally on a test class with @ChangeId + atest compat-annotation-processor-test

Change-Id: Iba364f9b2f9dcfa2aef544098b74eb30aa9af075
8 files changed
tree: b07bba9581a773deb036cb7990648e78e633b4d7
  1. annotation/