[code-reflection] RFR: OpBuilder optimizations - part 1. [v7]

[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:

  fix of ReflectMethods

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

Changes:
  - all: https://git.openjdk.org/babylon/pull/679/files
  - new: https://git.openjdk.org/babylon/pull/679/files/1f507969..ff698243

Webrevs:
 - full: https://webrevs.openjdk.org/?repo=babylon&pr=679&range=06
 - incr: https://webrevs.openjdk.org/?repo=babylon&pr=679&range=05-06

  Stats: 14 lines in 1 file changed: 2 ins; 8 del; 4 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