[code-reflection] RFR: Onnx subgraphs, lambda execution and BB removal [v5]

[Adam Sotona]

> Onnx subgraphs, lambda execution and BB removal

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

  fixed try with resources in MNISTDemo

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

Changes:
  - all: https://git.openjdk.org/babylon/pull/326/files
  - new: https://git.openjdk.org/babylon/pull/326/files/07202658..7627ec00

Webrevs:
 - full: https://webrevs.openjdk.org/?repo=babylon&pr=326&range=04
 - incr: https://webrevs.openjdk.org/?repo=babylon&pr=326&range=03-04

  Stats: 2 lines in 1 file changed: 0 ins; 0 del; 2 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