1. Implement Privacy Policy Tag Inheritance
2. Expose Dest values in IIncidentReportArgs.h

Please see bug for detail descriptions.

Bug: 67869340
Test: unit tested and on-device test. Ran command:
$ out/host/linux-x86/bin/incident-section-gen incidentd
to test various of privacy taggings.
Change-Id: I12af3d7da4c7c72bd63598893fe2c1f70b09baa4
diff --git a/Android.bp b/Android.bp
index 2ea4894..d8027c1 100644
--- a/Android.bp
+++ b/Android.bp
@@ -65,6 +65,7 @@
                 "core/proto/android/os/procrank.proto",
                 "core/proto/android/os/system_properties.proto",
                 "core/proto/android/service/graphicsstats.proto",
+                "libs/incident/proto/android/privacy.proto",
                 "tools/streaming_proto/stream.proto",
             ],
             shared: {