test(toml): Test with the official toml-test suite

[4513ECHO]

ref: #6663

Currently there is only tests for parse() because we have not had enough precise parser to compare the result of stringify() with the expected output yet.

Need to be discussed:

• Should we replace current parse_test.ts? If so, I think some tests (such as tests for error messages and __proto__) are need to be moved.

[CLAassistant]

All committers have signed the CLA.

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 94.20%. Comparing base (590b165) to head (9f05d05).

Additional details and impacted files

@@           Coverage Diff           @@
##             main    #6798   +/-   ##
=======================================
  Coverage   94.19%   94.20%           
=======================================
  Files         590      591    +1     
  Lines       42649    42682   +33     
  Branches     6726     6744   +18     
=======================================
+ Hits        40173    40207   +34     
+ Misses       2427     2426    -1     
  Partials       49       49           

☔ View full report in Codecov by Sentry.
📢 Have feedback on the report? Share it here.

🚀 New features to boost your workflow:

• ❄️ Test Analytics: Detect flaky tests, report on failures, and find test suite problems.
• 📦 JS Bundle Analysis: Save yourself from yourself by tracking and limiting bundle sizes in JS merges.