Initial implementation of pull consumer

[aaron-ai]

Fixes #500

[codecov-commenter]

Codecov Report

Attention: Patch coverage is 50.94131% with 443 lines in your changes missing coverage. Please review.

Project coverage is 46.26%. Comparing base (cea5343) to head (d169597).
Report is 79 commits behind head on master.

Files with missing lines	Patch %	Lines
...mq/client/java/impl/consumer/PullConsumerImpl.java	61.09%	96 Missing and 18 partials ⚠️
...mq/client/java/misc/CustomLinkedBlockingQueue.java	2.72%	107 Missing ⚠️
...lient/java/impl/consumer/PullProcessQueueImpl.java	60.86%	65 Missing and 7 partials ⚠️
...cketmq/client/java/impl/consumer/ConsumerImpl.java	19.11%	55 Missing ⚠️
...t/java/impl/consumer/PullMessageQueuesScanner.java	60.71%	17 Missing and 5 partials ⚠️
...t/java/impl/consumer/PullSubscriptionSettings.java	29.41%	12 Missing ⚠️
...ketmq/client/java/misc/CacheBlockingListQueue.java	78.94%	6 Missing and 6 partials ⚠️
...e/rocketmq/client/java/impl/ClientManagerImpl.java	75.75%	8 Missing ⚠️
...q/client/java/impl/consumer/BatchMessageViews.java	0.00%	7 Missing ⚠️
...apache/rocketmq/client/java/rpc/RpcClientImpl.java	68.18%	7 Missing ⚠️
... and 7 more

Additional details and impacted files

@@             Coverage Diff              @@
##             master     #501      +/-   ##
============================================
+ Coverage     45.94%   46.26%   +0.31%     
- Complexity      667      770     +103     
============================================
  Files           207      217      +10     
  Lines         11503    12388     +885     
  Branches       2933     3045     +112     
============================================
+ Hits           5285     5731     +446     
- Misses         5988     6386     +398     
- Partials        230      271      +41     

Flag	Coverage Δ
java	60.55% <50.94%> (-2.39%)	⬇️

Flags with carried forward coverage won't be shown. Click here to find out more.

☔ View full report in Codecov by Sentry.
📢 Have feedback on the report? Share it here.

[github-actions]

This PR is stale because it has been open for 30 days with no activity. It will be closed in 3 days if no further activity occurs. If you wish not to mark it as stale, please leave a comment in this PR.