[code-reflection] RFR: Bytecode cleanup, renames and javadoc

[Adam Sotona]

This PR introduces only minimal functional changes, it is mainly focused on the bytecode package cleanup and documentation.

Any comments and suggestions are welcome.

Thanks,
Adam

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Commit messages:
 - javadoc fix
 - minor refactoring + javadoc
 - javadoc format change
 - Renames + javadoc
 - Renames + javadoc
 - removed debug code
 - LocalsTypeMapper refactored and detached from BytecodeLift
 - table fix
 - fixed MD table
 - typo
 - ... and 1 more: https://git.openjdk.org/babylon/compare/15e8b6e4...547e7782

Changes: https://git.openjdk.org/babylon/pull/228/files
  Webrev: https://webrevs.openjdk.org/?repo=babylon&pr=228&range=00
  Stats: 1640 lines in 4 files changed: 955 ins; 659 del; 26 mod
  Patch: https://git.openjdk.org/babylon/pull/228.diff
  Fetch: git fetch https://git.openjdk.org/babylon.git pull/228/head:pull/228

PR: https://git.openjdk.org/babylon/pull/228