Copy libhello_fuchsia.so into root output directory

runtime/bin/BUILD.gn

Index: runtime/bin/BUILD.gn
diff --git a/runtime/bin/BUILD.gn b/runtime/bin/BUILD.gn
index 1b17b1489c2e48e491c2ed3c81c7816e9796adc1..d4a07bfd9cee2fca82e2b5b48ed824a71674b47d 100644
--- a/runtime/bin/BUILD.gn
+++ b/runtime/bin/BUILD.gn
@@ -892,6 +892,19 @@ if (is_fuchsia) {
     ]
     output_name = "hello_fuchsia"
   }
+
+  #copy("copy_hello_fuchsia_dylib") {
+  #  sources = [
+  #    get_label_info(":hello_fuchsia_lib($shlib_toolchain)", "root_out_dir") +
+  #        "/libhello_fuchsia.so",
+  #  ]
+  #  outputs = [
+  #    "$root_build_dir/{{source_file_part}}",
+  #  ]
+  #  deps = [
+  #    ":hello_fuchsia_dylib($shlib_toolchain)",
+  #  ]
+  #}
 }
 
 executable("process_test") {