Move typing policy to AOSP

native/jni/Android.mk

native/jni/src/suggest/policyimpl/typing/scoring_params.cpp

native/jni/src/suggest/policyimpl/typing/scoring_params.h

native/jni/src/suggest/policyimpl/typing/typing_scoring.cpp

native/jni/src/suggest/policyimpl/typing/typing_scoring.h

...jni/src/suggest/policyimpl/typing/typing_suggest_policy.h

...ve/jni/src/suggest/policyimpl/typing/typing_traversal.cpp

native/jni/src/suggest/policyimpl/typing/typing_traversal.h

...ve/jni/src/suggest/policyimpl/typing/typing_weighting.cpp

native/jni/src/suggest/policyimpl/typing/typing_weighting.h