feat(cli): add ProducerClientConnection command

[ShadowySpirits]

Output example:

┌─────────────────────────┬──────────┬──────────┬─────────────────────┬──────────┐
│        CLIENT ID        │ PROTOCOL │ VERSION  │       ADDRESS       │ LANGUAGE │
├─────────────────────────┼──────────┼──────────┼─────────────────────┼──────────┤
│SSpiritss-MBP.lan@19191#0│ GRPC_V2  │  V5_1_3  │0:0:0:0:0:0:0:1:56520│   RUST   │
└─────────────────────────┴──────────┴──────────┴─────────────────────┴──────────┘

[codecov]

Codecov Report

Merging #806 (edabc49) into main (54188ec) will decrease coverage by 0.28%.
The diff coverage is 0.00%.

Additional details and impacted files

@@             Coverage Diff              @@
##               main     #806      +/-   ##
============================================
- Coverage     56.15%   55.88%   -0.28%     
+ Complexity     1229     1228       -1     
============================================
  Files           132      132              
  Lines          8325     8366      +41     
  Branches        765      769       +4     
============================================
  Hits           4675     4675              
- Misses         3244     3285      +41     
  Partials        406      406              

Components	Coverage Δ
RocketMQ Broker	∅ <ø> (∅)
RocketMQ Common	5.80% <ø> (ø)
RocketMQ Controller	55.13% <ø> (ø)
RocketMQ Proxy	38.53% <0.00%> (-0.89%)	⬇️
RocketMQ Store	74.29% <ø> (ø)
RocketMQ Stream	∅ <ø> (∅)
RocketMQ Metadata	35.44% <ø> (ø)

Files	Coverage Δ
...mq/rocketmq/proxy/grpc/client/GrpcProxyClient.java	0.00% <0.00%> (ø)
...m/automq/rocketmq/proxy/grpc/ProxyServiceImpl.java	0.00% <0.00%> (ø)

... and 2 files with indirect coverage changes