fix: add codeowners file for openyurt

[rambohe-ch]

What type of PR is this?

Uncomment only one /kind <> line, hit enter to put that in a new line, and remove leading whitespace from that line:
/kind bug
/kind documentation
/kind enhancement
/kind good-first-issue
/kind feature
/kind question
/kind design
/sig ai
/sig iot
/sig network
/sig storage

/kind documentation

What this PR does / why we need it:

add codeowners file for enforcing Access Control Rules to secure the code base against attacks.

In the first step, I add Openyurt-Maintainers team as CODEOWNER for the whole repository.
and we will keep improve the CODEOWNER assignment during incubation.

Which issue(s) this PR fixes:

Fixes #

Special notes for your reviewer:

Does this PR introduce a user-facing change?

other Note

[sonarqubecloud]

Quality Gate passed

Issues
0 New issues
0 Accepted issues

Measures
0 Security Hotspots
0.0% Coverage on New Code
0.0% Duplication on New Code

See analysis details on SonarQube Cloud

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 45.24%. Comparing base (1ff3533) to head (800f404).
Report is 1 commits behind head on master.

Additional details and impacted files

@@            Coverage Diff             @@
##           master    #2224      +/-   ##
==========================================
- Coverage   45.30%   45.24%   -0.06%     
==========================================
  Files         406      406              
  Lines       27889    27889              
==========================================
- Hits        12635    12619      -16     
- Misses      14016    14029      +13     
- Partials     1238     1241       +3     

Flag	Coverage Δ
unittests	45.24% <ø> (-0.06%)	⬇️

Flags with carried forward coverage won't be shown. Click here to find out more.

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

[rambohe-ch]

#2224 #2223

[zyjhtangtang]

/LGTM