Add Jvm object monitor and remove rust_object_field from Object/Thread #682

Job	Run time
rust_ci (ubuntu-latest, beta)	56s
rust_ci (windows-latest, stable)	2m 5s
rust_ci (macos-latest, stable)	1m 3s
rust_ci (ubuntu-latest, stable)	56s
rust_ci (windows-latest, beta)	2m 2s
rust_ci (macos-latest, beta)	1m 3s
	8m 5s

Provide feedback