docs(java): publish JSON benchmark results

[chaokunyang]

Why?

What does this PR do?

publish JSON benchmark results:

Representation	Operation	fory-json ops/sec	jackson ops/sec	gson ops/sec	Fastest
String	Serialize	7,387,465	2,049,368	1,084,042	fory-json
String	Deserialize	2,897,955	1,074,885	902,772	fory-json
UTF-8 bytes	Serialize	10,375,498	1,868,614	1,037,211	fory-json
UTF-8 bytes	Deserialize	3,077,158	1,268,397	933,079	fory-json

Related issues

AI Contribution Checklist

• Substantial AI assistance was used in this PR: yes / no
• If yes, I included a completed AI Contribution Checklist in this PR description and the required AI Usage Disclosure.
• If yes, my PR description includes the required ai_review summary and screenshot evidence or equivalent persisted links of the final clean AI review results from both fresh reviewers described in AI_POLICY.md, the Fory-guided reviewer and the independent general reviewer, on the current PR diff or current HEAD after the latest code changes.

Does this PR introduce any user-facing change?

• Does this PR introduce any public API change?
• Does this PR introduce any binary protocol compatibility change?

Benchmark

[ayush00git]

ngl the benchmarks are way too impressive, I didn't read much of the code, could you point me to the specific design of fory-json ?

[chaokunyang]

ngl the benchmarks are way too impressive, I didn't read much of the code, could you point me to the specific design of fory-json ?

It's optimized by efficient json parse algorithm, minimal object allocation, codegen without reflection and jvm C2 compilation optimization.