ART: Add Field methods

Add GetFieldName, GetFieldDeclaringClass, GetFieldModifiers
and IsFieldSynthetic support. Add tests.

Bug: 34113943
Test: m test-art-host-run-test-918-fields
Change-Id: Id33b8c54c250f73f0658ec45ccb2b55eccb37623
diff --git a/test/Android.bp b/test/Android.bp
index 5a2c902..26c4f93 100644
--- a/test/Android.bp
+++ b/test/Android.bp
@@ -260,6 +260,7 @@
         "911-get-stack-trace/stack_trace.cc",
         "912-classes/classes.cc",
         "913-heaps/heaps.cc",
+        "918-fields/fields.cc",
     ],
     shared_libs: [
         "libbase",