Move netd AIDL to frameworks/lib/net

Note: oemnetd_aidl_interface is still in netd because it is not
versioned AIDL.

Bug: 201488997
Test: atest netd_integration_test
      atest netd_unit_test
Change-Id: I0f20b0ee139fd9e4354e2a21ce3f533b66e3ef3b
100 files changed