feat: support displayComma for showing comma

[pionxzh]

closes #492

This PR adds the ability to show a comma at the end of the line.
The initial goal of adding this is to allow the end user to select any part of the json view to copy valid json string. This PR also fixed a few edge cases to achieve the goal. But some special data types like Date, Function, BigInt, undefined and null are not rendered in a JSON-valid way. You will have to override their display or disallow these data in the source value.

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[codecov]

Codecov Report

Attention: Patch coverage is 86.20690% with 12 lines in your changes missing coverage. Please review.

Project coverage is 67.89%. Comparing base (0b4393b) to head (f503dde).
Report is 10 commits behind head on main.

Files	Patch %	Lines
docs/pages/full/index.tsx	0.00%	12 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #509      +/-   ##
==========================================
+ Coverage   67.53%   67.89%   +0.35%     
==========================================
  Files          37       37              
  Lines        3462     3535      +73     
  Branches      437      445       +8     
==========================================
+ Hits         2338     2400      +62     
- Misses       1111     1122      +11     
  Partials       13       13              

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[socket-security]

New and removed dependencies detected. Learn more about Socket for GitHub ↗︎

Package	New capabilities	Transitives	Size	Publisher

🚮 Removed packages: npm/@eslint/config-array@0.17.1), npm/@eslint/eslintrc@3.1.0), npm/@eslint/js@9.9.0), npm/@eslint/object-schema@2.1.4), npm/@humanwhocodes/retry@0.3.0), npm/doctrine@2.1.0), npm/eslint-scope@8.0.2), npm/eslint@9.9.0), npm/espree@10.1.0), npm/file-entry-cache@8.0.0), npm/flat-cache@4.0.1)

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