[code-reflection] RFR: ExplicitOnnxOps.If implementation of captured values and initializers [v5]

[Adam Sotona]

> ExplicitOnnxOps.If implementation of captured values and initializers - another attempt to do it right

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

  first draft of Loop op - work in progress

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Changes:
  - all: https://git.openjdk.org/babylon/pull/359/files
  - new: https://git.openjdk.org/babylon/pull/359/files/f3f73bdd..9e5cf88a

Webrevs:
 - full: https://webrevs.openjdk.org/?repo=babylon&pr=359&range=04
 - incr: https://webrevs.openjdk.org/?repo=babylon&pr=359&range=03-04

  Stats: 181 lines in 3 files changed: 177 ins; 3 del; 1 mod
  Patch: https://git.openjdk.org/babylon/pull/359.diff
  Fetch: git fetch https://git.openjdk.org/babylon.git pull/359/head:pull/359

PR: https://git.openjdk.org/babylon/pull/359