Refactor: Extract duplicate BufWrite into separate module

[NobodyXu]

No description provided.

[NobodyXu]

This workaround is necessary to prevent conflicting implementation of trait error.

Without this, we would have to duplicate BufWriter struct, which defeats the purpose of this refactor.

[robjtede]

Conflicts have arisen. I'll check this out after resolution.

[NobodyXu]

cc @jkushmaul I don't have time to push this now; if you want to pick it up you can create a new branch and simply copy the files over, it would be faster than manually resolv3z

[NobodyXu]

Closing this as I will pursue a more radical solution

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 0.00%. Comparing base (ccefbeb) to head (39274e5).
⚠️ Report is 5 commits behind head on main.

Additional details and impacted files

@@     Coverage Diff     @@
##   main   #377   +/-   ##
===========================
===========================

☔ 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.