#9940 feat: telnet invoke command with context argument.

[stonelion]

What is the purpose of the change

telnet command add context argument.

Brief changelog

1. command add a new option.
2. parse this option.
3. put it into attachment.

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.

[codecov-commenter]

Codecov Report

Merging #9974 (4d270af) into master (3a8e5e6) will decrease coverage by 0.01%.
The diff coverage is 63.15%.

@@             Coverage Diff              @@
##             master    #9974      +/-   ##
============================================
- Coverage     60.92%   60.90%   -0.02%     
+ Complexity      449      447       -2     
============================================
  Files          1100     1100              
  Lines         44557    44565       +8     
  Branches       6486     6488       +2     
============================================
- Hits          27145    27144       -1     
- Misses        14446    14457      +11     
+ Partials       2966     2964       -2     

Impacted Files	Coverage Δ
...g/apache/dubbo/qos/legacy/InvokeTelnetHandler.java	68.08% <63.15%> (-2.60%)	⬇️
...che/dubbo/remoting/transport/mina/MinaChannel.java	35.52% <0.00%> (-10.53%)	⬇️
...ng/exchange/support/header/HeartbeatTimerTask.java	68.42% <0.00%> (-5.27%)	⬇️
...e/dubbo/remoting/transport/netty/NettyChannel.java	55.68% <0.00%> (-4.55%)	⬇️
...apache/dubbo/common/config/ConfigurationUtils.java	67.74% <0.00%> (-3.23%)	⬇️
...dubbo/remoting/exchange/support/DefaultFuture.java	88.28% <0.00%> (-0.91%)	⬇️
...ng/transport/dispatcher/all/AllChannelHandler.java	89.65% <0.00%> (ø)
...rg/apache/dubbo/common/timer/HashedWheelTimer.java	79.72% <0.00%> (+0.34%)	⬆️
...g/apache/dubbo/registry/consul/ConsulRegistry.java	60.58% <0.00%> (+0.58%)	⬆️
... and 4 more

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[stonelion]

@AlbumenJ