GoMod: new parser

[masatake]

No description provided.

[codecov]

Codecov Report

❌ Patch coverage is 0% with 22 lines in your changes missing coverage. Please review.
✅ Project coverage is 85.87%. Comparing base (5a28e00) to head (ca4d158).
⚠️ Report is 2 commits behind head on master.

Files with missing lines	Patch %	Lines
optlib/gomod.c	0.00%	22 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##           master    #4329      +/-   ##
==========================================
- Coverage   85.90%   85.87%   -0.04%     
==========================================
  Files         251      252       +1     
  Lines       62510    62532      +22     
==========================================
  Hits        53699    53699              
- Misses       8811     8833      +22     

☔ 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.