auto detect proxy type

[icodening]

What is the purpose of the change

auto detect proxy type

Brief changelog

add marker interface. org.apache.dubbo.rpc.model.DubboStub

Verifying this change

Checklist

• Make sure there is a GitHub_issue field for the change (usually before you start working on it). Trivial changes like typos do not require a GitHub issue. Your pull request should address just this issue, without pulling in other changes - one PR resolves one issue.
• Each commit in the pull request should have a meaningful subject line and body.
• Write a pull request description that is detailed enough to understand what the pull request does, how, and why.
• Check if is necessary to patch to Dubbo 3 if you are work on Dubbo 2.7
• Write necessary unit-test to verify your logic correction, more mock a little better when cross module dependency exist. If the new feature or significant change is committed, please remember to add sample in dubbo samples project.
• Add some description to dubbo-website project if you are requesting to add a feature.
• GitHub Actions works fine on your own branch.
• If this contribution is large, please follow the Software Donation Guide.

[sonarcloud]

Kudos, SonarCloud Quality Gate passed!   

0 Bugs
0 Vulnerabilities
0 Security Hotspots
1 Code Smell

62.5% Coverage
0.0% Duplication

[codecov-commenter]

Codecov Report

Merging #12232 (3ddd577) into 3.2 (0724e94) will decrease coverage by 2.63%.
The diff coverage is n/a.

@@             Coverage Diff              @@
##                3.2   #12232      +/-   ##
============================================
- Coverage     69.81%   67.19%   -2.63%     
+ Complexity      129        2     -127     
============================================
  Files          3426     1736    -1690     
  Lines        160401    68997   -91404     
  Branches      26531     9855   -16676     
============================================
- Hits         111988    46360   -65628     
+ Misses        38660    18191   -20469     
+ Partials       9753     4446    -5307     

see 1989 files with indirect coverage changes

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[EarthChen]

LGTM

[icodening]

ref #12175