Move TrafficController relevant files from netd to mainline module

git diff packages/modules/Connectivity/service/native/TrafficController.cpp system/netd/server/TrafficController.cpp
git diff packages/modules/Connectivity/service/native/TrafficControllerTest.cpp system/netd/server/TrafficControllerTest.cpp
git diff packages/modules/Connectivity/service/native/include/TrafficController.h system/netd/server/TrafficController.h

Test: m
No-Typo-Check: clean move
BYPASS_INCLUSIVE_LANGUAGE_REASON= clean move
Change-Id: I7c0200e28e5e4459477d370912277fa1281b786b
3 files changed