[#8557] Send caller app name

[yjqg6666]

Resolve #8557.

This feature is disabled by default.

It can be enabled by configuration "profiler.sendAppName.enable=true". The header for caller application name can be configured by "profiler.sendAppName.headerName", default to "X-Caller-Application-Name". If you want to have less traffic consumed, you can configure the header to "X-CAN" or "CAN" or "Caller".

It's useful to combine this feature with PR #6987 "record server received request header/cookie" which has been available since version v2.1.0.

Supported http client:

• Apache http client 4 (IT updated)
• Apache http client 3 (IT updated)
• jdk http url connection (IT updated)
• ning async http client (IT updated)
• okhttp (IT updated)
• reactor-netty
• webflux
• vertx

[yjqg6666]

@emeroad @koo-taejin this feature is completed and tested. PTAL.

[codecov]

Codecov Report

Attention: Patch coverage is 0% with 58 lines in your changes missing coverage. Please review.

Project coverage is 39.65%. Comparing base (23c8dc1) to head (6868900).
Report is 1633 commits behind head on master.

Files	Patch %	Lines
...p/plugin/request/DefaultApplicationInfoSender.java	0.00%	15 Missing ⚠️
...ceptor/HttpMethodBaseExecuteMethodInterceptor.java	0.00%	6 Missing ⚠️
...synchttpclient/interceptor/ExecuteInterceptor.java	0.00%	6 Missing ⚠️
...pclient/interceptor/ExecuteRequestInterceptor.java	0.00%	6 Missing ⚠️
.../AbstractRequestBuilderBuildMethodInterceptor.java	0.00%	5 Missing ⚠️
...erceptor/RequestBuilderBuildMethodInterceptor.java	0.00%	5 Missing ⚠️
...ttp1xClientConnectionCreateRequestInterceptor.java	0.00%	4 Missing ⚠️
...ientExchangeHandlerImplStartMethodInterceptor.java	0.00%	3 Missing ⚠️
...r/HttpRequestExecutorExecuteMethodInterceptor.java	0.00%	3 Missing ⚠️
...nterceptor/HttpClientImplDoRequestInterceptor.java	0.00%	3 Missing ⚠️
... and 1 more

Additional details and impacted files

@@             Coverage Diff              @@
##             master    #8570      +/-   ##
============================================
- Coverage     39.79%   39.65%   -0.14%     
- Complexity    11401    11403       +2     
============================================
  Files          3350     3363      +13     
  Lines         89354    89674     +320     
  Branches       9924     9963      +39     
============================================
+ Hits          35555    35557       +2     
- Misses        50737    51057     +320     
+ Partials       3062     3060       -2     

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