Move Aidl utility code to aidl/utils -- hal 2/2

This change is part of an effort to remove HAL types from
libneuralnetworks_common*. This change:
* Updates the header guard names for the new directory
* Removes the "Aidl" prefix from the files
* Adds temporary "Aidl" header files under include/ that redirect to
   their corresponding files in include/nnapi/hal/aidl/
* Changes references of libneuralnetworks_common_hidl to
   libneuralnetworks_common

Bug: 191442336
Test: mma
Change-Id: Icbcc04e0a49a9adf8d8826fd5735028ea26de0ca