Clean up ScopedThreadStateChange to use ObjPtr

Also fixed inclusion of -inl.h files in .h files by adding
scoped_object_access-inl.h and scoped_fast_natvie_object_access-inl.h

Changed AddLocalReference / Decode to use ObjPtr.

Changed libartbenchmark to be debug to avoid linkage errors.

Bug: 31113334

Test: test-art-host

Change-Id: I4d2e160483a29d21e1e0e440585ed328b9811483
diff --git a/runtime/oat_file_test.cc b/runtime/oat_file_test.cc
index a88553c..b416b9d 100644
--- a/runtime/oat_file_test.cc
+++ b/runtime/oat_file_test.cc
@@ -21,7 +21,7 @@
 #include <gtest/gtest.h>
 
 #include "common_runtime_test.h"
-#include "scoped_thread_state_change.h"
+#include "scoped_thread_state_change-inl.h"
 
 namespace art {