Support socks5 proxy username and password

[jdxia]

1. Support socks5 proxy username and password
2. support tcp fastopen

[wcy666103]

use mvn spotless:apply to format the code first

[jdxia]

Thanks, Already formatted @wcy666103

[jdxia]

@AlbumenJ Hello, can you help me merge this pr? 😊 All checks have passed

[jdxia]

Should we proceed with merging this PR? If not, I will go ahead and close it. @AlbumenJ

[AlbumenJ]

@CrazyHZM PTAL

[codecov-commenter]

Codecov Report

Attention: Patch coverage is 28.57143% with 5 lines in your changes missing coverage. Please review.

Project coverage is 58.85%. Comparing base (84d8cc2) to head (b516cd5).

Files with missing lines	Patch %	Lines
...e/dubbo/remoting/transport/netty4/NettyClient.java	28.57%	5 Missing :warning:

Additional details and impacted files

@@             Coverage Diff              @@
##                3.3   #14769      +/-   ##
============================================
- Coverage     60.74%   58.85%   -1.89%     
+ Complexity    10913       12   -10901     
============================================
  Files          1886     1886              
  Lines         86145    86151       +6     
  Branches      12906    12906              
============================================
- Hits          52331    50708    -1623     
- Misses        28359    29905    +1546     
- Partials       5455     5538      +83     

Flag	Coverage Δ
integration-tests	?
samples-tests	?
unit-tests	58.85% <28.57%> (-0.02%)	:arrow_down:

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[zrlw]

dubbo-samples-spring-boot-hystrix is affected by this pr, and TCP_FASTOPEN is the cause.

Failed to refer invoker for interface:interface org.apache.dubbo.spring.boot.api.HelloService, ... : Failed to start NettyClient /172.19.0.3 connect to the server /172.19.0.2:20880, cause: TCP_FASTOPEN, dubbo version: 3.3.4-SNAPSHOT, current host: 172.19.0.3, error code: 4-3. This may be caused by , go to https://dubbo.apache.org/faq/4/3 to find instructions.