[NETD-TC#14] Add traffic controller JNI to tethering module am: 790c83e387 am: 404cd863ee am: 6adbaae9c2 am: 0964c6607a

Original change: https://android-review.googlesource.com/c/platform/packages/modules/Connectivity/+/1948169

Change-Id: I343c87794a567a6132a1a9b6e6b13ecd74c2a75c