[code-reflection] RFR: Onnx Record to tuple types conversion moved to TypeConverter [v2]

[Adam Sotona]

> + detection of constant arrays
> - removal of ArrayLen annotation

Adam Sotona has updated the pull request with a new target base due to a merge or a rebase. The incremental webrev excludes the unrelated changes brought in by the merge/rebase. The pull request contains four additional commits since the last revision:

 - removed debug outputs
   
 - Merge remote-tracking branch 'babylon/code-reflection' into onnx-type-convertor
 - imports cleanup
   
 - Record to tuple types conversion moved to TypeConverter
   + detection of constant arrays
   - removal of ArrayLen annotation

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

Changes:
  - all: https://git.openjdk.org/babylon/pull/477/files
  - new: https://git.openjdk.org/babylon/pull/477/files/cb5e4be4..956695d1

Webrevs:
 - full: https://webrevs.openjdk.org/?repo=babylon&pr=477&range=01
 - incr: https://webrevs.openjdk.org/?repo=babylon&pr=477&range=00-01

  Stats: 1311 lines in 60 files changed: 233 ins; 180 del; 898 mod
  Patch: https://git.openjdk.org/babylon/pull/477.diff
  Fetch: git fetch https://git.openjdk.org/babylon.git pull/477/head:pull/477

PR: https://git.openjdk.org/babylon/pull/477