[code-reflection] RFR: ONNX FFM Runtime initial work [v6]

[Adam Sotona]

> This is initial work on ONNX FFM runtime with very raw connection with OnnxInterpreter and Tensor.
> 
> It is a rebase of https://github.com/PaulSandoz/babylon/pull/1

Adam Sotona has updated the pull request incrementally with one additional commit since the last revision:

  working with flat tensors by default

-------------

Changes:
  - all: https://git.openjdk.org/babylon/pull/311/files
  - new: https://git.openjdk.org/babylon/pull/311/files/f4d30408..7f44d909

Webrevs:
 - full: https://webrevs.openjdk.org/?repo=babylon&pr=311&range=05
 - incr: https://webrevs.openjdk.org/?repo=babylon&pr=311&range=04-05

  Stats: 15 lines in 2 files changed: 0 ins; 6 del; 9 mod
  Patch: https://git.openjdk.org/babylon/pull/311.diff
  Fetch: git fetch https://git.openjdk.org/babylon.git pull/311/head:pull/311

PR: https://git.openjdk.org/babylon/pull/311