wip: export Statement class

Author: geeksilva97

src/env_properties.h

@@ -460,6 +460,7 @@
   V(shutdown_wrap_template, v8::ObjectTemplate)                                \
   V(socketaddress_constructor_template, v8::FunctionTemplate)                  \
   V(sqlite_statement_sync_constructor_template, v8::FunctionTemplate)          \
+  V(sqlite_statement_async_constructor_template, v8::FunctionTemplate)          \
   V(sqlite_statement_sync_iterator_constructor_template, v8::FunctionTemplate) \
   V(sqlite_session_constructor_template, v8::FunctionTemplate)                 \
   V(streambaseentry_ctor_template, v8::FunctionTemplate)                       \