Add Jvm object monitor and remove rust_object_field from Object/Thread #679

Job	Run time
rust_ci (macos-latest, beta)	1m 19s
rust_ci (ubuntu-latest, beta)	1m 28s
rust_ci (macos-latest, stable)	1m 27s
rust_ci (windows-latest, beta)	2m 51s
rust_ci (ubuntu-latest, stable)	1m 38s
rust_ci (windows-latest, stable)	2m 59s
	11m 42s

Provide feedback