[ISSUE #8755] batch send support compression

[iamgd67]

closes #8755

Brief Description

by default, DefaultMQProducer will compress message body when body length is longer than 4k, but if send with batch(send( Collection<Message> msgs)), body are not compressed.
this pr compress each message body when average length is larger than 4k

How Did You Test This Change?

send and receive batch messages with 8k body(larger than 4k default compress length), check commit log content is compressed. consume message body is 8k length.

[codecov-commenter]

Codecov Report

Attention: Patch coverage is 62.85714% with 13 lines in your changes missing coverage. Please review.

Project coverage is 47.35%. Comparing base (e2abbc3) to head (c99ff27).
Report is 7 commits behind head on develop.

Files with missing lines	Patch %	Lines
...mq/client/impl/producer/DefaultMQProducerImpl.java	73.07%	4 Missing and 3 partials ⚠️
...apache/rocketmq/common/message/MessageDecoder.java	33.33%	5 Missing and 1 partial ⚠️

Additional details and impacted files

@@              Coverage Diff              @@
##             develop    #8746      +/-   ##
=============================================
+ Coverage      47.32%   47.35%   +0.02%     
- Complexity     11545    11556      +11     
=============================================
  Files           1282     1282              
  Lines          89843    89888      +45     
  Branches       11556    11567      +11     
=============================================
+ Hits           42521    42567      +46     
+ Misses         42069    42065       -4     
- Partials        5253     5256       +3     

Flag	Coverage Δ
	47.35% <62.85%> (+0.02%)	⬆️

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[iamgd67]

ping @lizhimins for review

[iamgd67]

ping @RongtongJin for review

[lizhanhui]

1. An integration test, verifying this feature from end-to-end, should be added.