fix(protocol): delete string print in header decode and open test cases.

[ShannonDing]

What is the purpose of the change

[ISSUE #111 ]fix(protocol): delete string print in header decode and open test cases.

Brief changelog

1. delete string print in header decode
2. add test cases for command decode

Verifying this change

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[codecov-io]

Codecov Report

Merging #223 into master will increase coverage by 3.19%.
The diff coverage is 100%.

@@            Coverage Diff             @@
##           master     #223      +/-   ##
==========================================
+ Coverage   47.82%   51.01%   +3.19%     
==========================================
  Files         173      173              
  Lines       10441    10701     +260     
==========================================
+ Hits         4993     5459     +466     
+ Misses       5448     5242     -206

Impacted Files	Coverage Δ
test/src/producer/StringIdMakerTest.cpp	100% <ø> (ø)
test/src/protocol/ConsumerRunningInfoTest.cpp	100% <100%> (ø)	⬆️
src/protocol/CommandHeader.cpp	81.4% <100%> (+34.5%)	⬆️
test/src/protocol/CommandHeaderTest.cpp	100% <100%> (ø)	⬆️
test/src/protocol/LockBatchBodyTest.cpp	100% <100%> (ø)	⬆️
src/protocol/MessageQueue.cpp	86.53% <0%> (+1.92%)	⬆️
src/consumer/SubscriptionData.cpp	43.33% <0%> (+8.33%)	⬆️
src/protocol/CommandHeader.h	70.76% <0%> (+21.56%)	⬆️
src/protocol/LockBatchBody.h	100% <0%> (+33.33%)	⬆️
... and 2 more

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