[code-reflection] RFR: Explicit Arena passing to Tensor construction and Session execution

[Adam Sotona]

Holding `Arena` instances in `OnnxRuntime` and `Session` still cause memory leaks.
This patch allows to pass explicit arena for `Tensor` construction, `Session` construction and  each `Session` run.

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Commit messages:
 - Merge remote-tracking branch 'babylon/code-reflection' into arenas-cont
 - passing Arena instances to tensor construction and Session run

Changes: https://git.openjdk.org/babylon/pull/337/files
  Webrev: https://webrevs.openjdk.org/?repo=babylon&pr=337&range=00
  Stats: 142 lines in 6 files changed: 43 ins; 13 del; 86 mod
  Patch: https://git.openjdk.org/babylon/pull/337.diff
  Fetch: git fetch https://git.openjdk.org/babylon.git pull/337/head:pull/337

PR: https://git.openjdk.org/babylon/pull/337