[code-reflection] RFR: Unreflect tests

[Adam Sotona]

This PR implement `Unreflect` test tool and re-runs tests in the unreflected form.

`TestSwitchExpressionOp` and `TestSwitchStatementOp` yet to be temporary excluded as failing.

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Commit messages:
 - fixed long lines
 - unreflect tests

Changes: https://git.openjdk.org/babylon/pull/762/files
  Webrev: https://webrevs.openjdk.org/?repo=babylon&pr=762&range=00
  Stats: 353 lines in 86 files changed: 352 ins; 1 del; 0 mod
  Patch: https://git.openjdk.org/babylon/pull/762.diff
  Fetch: git fetch https://git.openjdk.org/babylon.git pull/762/head:pull/762

PR: https://git.openjdk.org/babylon/pull/762