Implement System Properties Section

Bug: 68774852
Test: unit tested and on device tests
Change-Id: I0d4aadf8d4203fe56e35bbfb77e5c532116fd27e
diff --git a/Android.bp b/Android.bp
index 2c4963c..24a9bca 100644
--- a/Android.bp
+++ b/Android.bp
@@ -62,6 +62,7 @@
                 "core/proto/android/os/kernelwake.proto",
                 "core/proto/android/os/pagetypeinfo.proto",
                 "core/proto/android/os/procrank.proto",
+                "core/proto/android/os/system_properties.proto",
                 "core/proto/android/service/graphicsstats.proto",
                 "tools/streaming_proto/stream.proto",
             ],
@@ -86,6 +87,7 @@
         "core/proto/android/os/kernelwake.proto",
         "core/proto/android/os/pagetypeinfo.proto",
         "core/proto/android/os/procrank.proto",
+        "core/proto/android/os/system_properties.proto",
     ],
 
     // Append protoc-gen-cppstream tool's PATH otherwise aprotoc can't find the plugin tool