feat(registry/polaris): add registry for Tencent Polaris

[huyuanxin]

Description (what this PR does / why we need it):

This PR creates a registry for Tencent Polaris

Which issue(s) this PR fixes (resolves / be part of):

fixes no issues

Other special notes for reviewer:

[huyuanxin]

看了一下Actions的错，Go / build & test是polaris没部署导致测试出错

[huyuanxin]

业务上发送了问题，要小修改确认一下

[longXboy]

请把go lint解决一下，感谢

[huyuanxin]

OK，等我回到公司空余时间搞一下，还发现了逻辑错误，搞好我推一下🤔

[huyuanxin]

看起来lint可以了，测试没过还是因为没有部署注册中心🤔
大意了，没看到怎么cdci部署polaris

[daemon365]

看起来lint可以了，测试没过还是因为没有部署注册中心🤔 大意了，没看到怎么cdci部署polaris

单元测试的话随便mock一下 就可以了
可以的话 在这https://github.com/go-kratos/kratos/tree/main/examples/registry 加个简单的example 非常感谢

[huyuanxin]

看起来lint可以了，测试没过还是因为没有部署注册中心🤔 大意了，没看到怎么cdci部署polaris

单元测试的话随便mock一下 就可以了 可以的话 在这https://github.com/go-kratos/kratos/tree/main/examples/registry 加个简单的example 非常感谢

我研究一下怎么在docker部署polaris,example今天或者明天能加上

[huyuanxin]

焯，一直部署不了

[huyuanxin]

用官方的部署要挂载配置文件，搞了一天没搞好，自己封装了一个镜像来测试。

[codecov-commenter]

Codecov Report

Merging #1816 (369cccb) into main (9662ef3) will decrease coverage by 0.05%.
The diff coverage is n/a.

@@            Coverage Diff             @@
##             main    #1816      +/-   ##
==========================================
- Coverage   80.80%   80.74%   -0.06%     
==========================================
  Files          80       80              
  Lines        3558     3558              
==========================================
- Hits         2875     2873       -2     
- Misses        477      479       +2     
  Partials      206      206              

Impacted Files	Coverage Δ
internal/context/context.go	97.01% <0.00%> (-2.99%)	⬇️
container/group/group.go
internal/group/group.go	81.25% <0.00%> (ø)

---

Continue to review full report at Codecov.

Legend - Click here to learn more
Δ = absolute <relative> (impact), ø = not affected, ? = missing data
Powered by Codecov. Last update 9662ef3...369cccb. Read the comment docs.

[tonybase]

LGTM

[daemon365]

merge main一下 @huyuanxin