Test harness for generated tests

Created initial test harness for test models and examples from
NNAPI test generator in VtsHalNeuralnetworksV1_0TargetTest. As
an example, also added a test generated from test spec at
frameworks/ml/nn/tools/test_generator/tests/P_vts_full/.

Generated model setup code and examples are from:
frameworks/ml/nn/runtime/test/generated/examples and
frameworks/ml/nn/runtime/test/generated/vts_models respectively.

Bug: 63905942
Bug: 63525563
Test: VtsHalNeuralnetworksV1_0TargetTest with sample driver enabled
      by cherry-pick

Change-Id: Ief029eed9718c8724ef0b64fc6a7f6b9a7bc7b7b