Support example that has tensors of different types

Operations like LSH_PROJECTION requires tensors of different types. This
CL adds support to the generator and harness (for native tests).

Revised:
- Test generator
- Test harness
- Existing examples

Also regenerated examples from testcases.

Bug: 63905942
Test: tools/test_generator/test.py
Test: NeuralNetworkTest on angler
Test: cts-tradefed run commandAndExit cts -m CtsNNAPITestCases
Change-Id: I000cdac92468659709be18599a425ef82695011a
42 files changed
tree: 566fb5735891d834baf0481f527cbf3eea5e0354
  1. nn/
  2. Android.bp