[code-reflection] RFR: OpBuilder optimizations - part 1. [v12]

[Adam Sotona]

> This PR include following changes:
> 
> - op-building methods delegate to a synthetic inner class
> - fixed boxing in `OpBuilder`
> - op-building methods are generated by `BytecodeGenerator` and support wide range of ops
> - `CodeModelTranslator` is deleted
> - synthetic op-building method overrides significantly reduce overhead (by 60% on `TestBytecode`)
> - refactored `OpBuilder` to build `ModuleOp` instead of individual `FuncCallOp`s 
> - fixed `BytecodeGenerator` to support `ModuleOp` and `FuncCallOp`

Adam Sotona has updated the pull request incrementally with one additional commit since the last revision:

  fixed javadoc

-------------

Changes:
  - all: https://git.openjdk.org/babylon/pull/679/files
  - new: https://git.openjdk.org/babylon/pull/679/files/5e24df68..1741e2b8

Webrevs:
 - full: https://webrevs.openjdk.org/?repo=babylon&pr=679&range=11
 - incr: https://webrevs.openjdk.org/?repo=babylon&pr=679&range=10-11

  Stats: 1 line in 1 file changed: 0 ins; 1 del; 0 mod
  Patch: https://git.openjdk.org/babylon/pull/679.diff
  Fetch: git fetch https://git.openjdk.org/babylon.git pull/679/head:pull/679

PR: https://git.openjdk.org/babylon/pull/679