[CLATJ#18] libclat: move clat tc and bpf utilis from netd

Move native functions from ClatdController and TcUtils to libclat
for jni ClatdCoordinator.

Bug: 212345928
Test: atest libclat_test
Change-Id: Ia4b344b07537d57c3e4ff1285b0e7b17e0c63c3e
6 files changed