[FEATURE] JSON 比对 #1946

[yanchangyou]

What this PR does / why we need it?

[FEATURE] JSON 比对 #1946

Summary of your change

add compare util

Please indicate you've done the following:

• Made sure tests are passing and test coverage is added if needed.
• Made sure commit message follow the rule of Conventional Commits specification.
• Considered the docs impact and opened a new docs issue or PR with docs changes if needed.

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[codecov-commenter]

Codecov Report

Attention: Patch coverage is 98.07692% with 3 lines in your changes missing coverage. Please review.

Project coverage is 77.47%. Comparing base (a0b63fa) to head (3f7166f).
Report is 492 commits behind head on main.

Files with missing lines	Patch %	Lines
.../java/com/alibaba/fastjson2/util/CompareUtils.java	98.07%	0 Missing and 3 partials ⚠️

Additional details and impacted files

@@             Coverage Diff              @@
##               main    #2267      +/-   ##
============================================
+ Coverage     77.36%   77.47%   +0.10%     
- Complexity    22613    22784     +171     
============================================
  Files           634      635       +1     
  Lines         84663    85377     +714     
  Branches      19231    19354     +123     
============================================
+ Hits          65496    66142     +646     
- Misses        11171    11232      +61     
- Partials       7996     8003       +7     

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