[code-reflection] RFR: Onnx subgraphs, lambda execution and BB reduction [v2]

[Adam Sotona]

> Onnx subgraphs, lambda execution and BB reduction

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

  implemented OnnxRuntime::execute(Quotable & Supplier<Tensor>)

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Changes:
  - all: https://git.openjdk.org/babylon/pull/326/files
  - new: https://git.openjdk.org/babylon/pull/326/files/8b485862..84715103

Webrevs:
 - full: https://webrevs.openjdk.org/?repo=babylon&pr=326&range=01
 - incr: https://webrevs.openjdk.org/?repo=babylon&pr=326&range=00-01

  Stats: 139 lines in 6 files changed: 40 ins; 22 del; 77 mod
  Patch: https://git.openjdk.org/babylon/pull/326.diff
  Fetch: git fetch https://git.openjdk.org/babylon.git pull/326/head:pull/326

PR: https://git.openjdk.org/babylon/pull/326