[code-reflection] RFR: Remove bytecode dialect

[Adam Sotona]

This patch re-implements `BytecodeLift` to lift from bytecode directly to the core dialect
and removes `BytecodeInstructionOps` with the bytecode dialect.

Implementation is complete up to the point of passing all current tests.

Please review.

Thanks,
Adam

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Commit messages:
 - work in progress
 - work in progress
 - work in progress
 - work in progress
 - work in progress

Changes: https://git.openjdk.org/babylon/pull/16/files
 Webrev: https://webrevs.openjdk.org/?repo=babylon&pr=16&range=00
  Stats: 3305 lines in 7 files changed: 303 ins; 2942 del; 60 mod
  Patch: https://git.openjdk.org/babylon/pull/16.diff
  Fetch: git fetch https://git.openjdk.org/babylon.git pull/16/head:pull/16

PR: https://git.openjdk.org/babylon/pull/16