feat: 增加 HttpClientFactoryInterface 方法用于工厂模式创建 http client

[yansongda]

close: #920

[netlify]

✅ Deploy Preview for pay-yansongda canceled.

Name	Link
🔨 Latest commit	1badf9d
🔍 Latest deploy log	https://app.netlify.com/sites/pay-yansongda/deploys/65957c9b48557f00089c8042

[codecov]

Codecov Report

Attention: 4 lines in your changes are missing coverage. Please review.

Comparison is base (1d34898) 96.36% compared to head (1badf9d) 96.29%.

Files	Patch %	Lines
src/HttpClientFactory.php	62.50%	3 Missing ⚠️
src/Provider/AbstractProvider.php	80.00%	1 Missing ⚠️

Additional details and impacted files

@@             Coverage Diff              @@
##             master     #921      +/-   ##
============================================
- Coverage     96.36%   96.29%   -0.07%     
- Complexity      957      960       +3     
============================================
  Files           338      339       +1     
  Lines          5856     5864       +8     
============================================
+ Hits           5643     5647       +4     
- Misses          213      217       +4     

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