[code-reflection] RFR: Lower SwitchExpressionOp

[Mourad Abbay]

Lowering of SwitchExpressionOp

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Commit messages:
 - Lower SwitchExpressionOp

Changes: https://git.openjdk.org/babylon/pull/45/files
  Webrev: https://webrevs.openjdk.org/?repo=babylon&pr=45&range=00
  Stats: 148 lines in 2 files changed: 144 ins; 0 del; 4 mod
  Patch: https://git.openjdk.org/babylon/pull/45.diff
  Fetch: git fetch https://git.openjdk.org/babylon.git pull/45/head:pull/45

PR: https://git.openjdk.org/babylon/pull/45