[code-reflection] RFR: OnnxRuntime and OnnxProtoBuilder continuation [v4]

[Adam Sotona]

> OnnxRuntime and OnnxProtoBuilder continuation

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

  fixed scalars creation + tests

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

Changes:
  - all: https://git.openjdk.org/babylon/pull/316/files
  - new: https://git.openjdk.org/babylon/pull/316/files/f9b575e8..cc9ab739

Webrevs:
 - full: https://webrevs.openjdk.org/?repo=babylon&pr=316&range=03
 - incr: https://webrevs.openjdk.org/?repo=babylon&pr=316&range=02-03

  Stats: 66 lines in 4 files changed: 53 ins; 1 del; 12 mod
  Patch: https://git.openjdk.org/babylon/pull/316.diff
  Fetch: git fetch https://git.openjdk.org/babylon.git pull/316/head:pull/316

PR: https://git.openjdk.org/babylon/pull/316