Add CODEOWNERS file for ts-async approvers

[nev21]

No description provided.

[Copilot]

Pull request overview

Adds repository-wide code ownership to ensure reviews from the ts-async approver groups can be automatically requested/enforced via GitHub’s CODEOWNERS support.

Changes:

• Introduces a .github/CODEOWNERS file.
• Sets the default (*) ownership to @nevware21/typescript-approvers and @nevware21/automation.

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[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 99.03%. Comparing base (bb40d79) to head (04e32c3).
⚠️ Report is 1 commits behind head on main.

Additional details and impacted files

@@           Coverage Diff           @@
##             main     #434   +/-   ##
=======================================
  Coverage   99.03%   99.03%           
=======================================
  Files          19       19           
  Lines         727      727           
  Branches      183      183           
=======================================
  Hits          720      720           
  Misses          7        7           

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[nevware21-bot]

Approved by nevware21-bot