Add config and event protos for network tracing.

This adds the config and event protos for packet tracing only. Syscall
tracing as a whole will come later.

Bug: 246985031
Test: local build
Change-Id: I8de5b1c38932010f659f9cab30f66e8a1f6b6e51

BUILD

diff --git a/BUILD b/BUILD
index 83e46a7..0b83650 100644
--- a/BUILD
+++ b/BUILD
@@ -2752,6 +2752,7 @@
         "protos/perfetto/config/android/android_log_config.proto",
         "protos/perfetto/config/android/android_polled_state_config.proto",
         "protos/perfetto/config/android/android_system_property_config.proto",
+        "protos/perfetto/config/android/network_trace_config.proto",
         "protos/perfetto/config/android/packages_list_config.proto",
     ],
     visibility = [
@@ -3409,6 +3410,7 @@
         "protos/perfetto/trace/android/gpu_mem_event.proto",
         "protos/perfetto/trace/android/graphics_frame_event.proto",
         "protos/perfetto/trace/android/initial_display_state.proto",
+        "protos/perfetto/trace/android/network_trace.proto",
         "protos/perfetto/trace/android/packages_list.proto",
     ],
     visibility = [