[ISSUE #285] add SubscriptionManager

[wqliang]

Fixes #2852 .

Motivation

• add SubscriptionManager to manage client info adn sub topics;
• reduce redundant code for updating client info and sub topics info;

Modifications

• add SubscriptionManager and move 'localConsumerGroupMapping' 'localClientInfoMapping' from EventMeshHTTPServer to SubscriptionManager;
• use SubscriptionManager to registerClient on SubscribeProcessor;
• use SubscriptionManager to registerClient on LocalSubscribeEventProcessor;
• use SubscriptionManager to update sub topics on SubscribeProcessor;
• use SubscriptionManager to update sub topics on LocalSubscribeEventProcessor;

Documentation

• Does this pull request introduce a new feature? (no)

[codecov]

Codecov Report

Merging #2856 (f153882) into master (3bda8fb) will increase coverage by 0.02%.
The diff coverage is 0.00%.

@@             Coverage Diff              @@
##             master    #2856      +/-   ##
============================================
+ Coverage     11.61%   11.64%   +0.02%     
  Complexity      911      911              
============================================
  Files           503      505       +2     
  Lines         28093    28028      -65     
  Branches       2876     2859      -17     
============================================
  Hits           3264     3264              
+ Misses        24533    24468      -65     
  Partials        296      296              

Impacted Files	Coverage Δ
...tmesh/runtime/admin/handler/HTTPClientHandler.java	0.00% <0.00%> (ø)
...he/eventmesh/runtime/boot/EventMeshHTTPServer.java	0.00% <0.00%> (ø)
...che/eventmesh/runtime/boot/EventMeshTCPServer.java	0.57% <ø> (+<0.01%)	⬆️
...he/eventmesh/runtime/core/consumer/ClientInfo.java	0.00% <0.00%> (ø)
...esh/runtime/core/consumer/SubscriptionManager.java	0.00% <0.00%> (ø)
.../runtime/core/consumergroup/ConsumerGroupConf.java	0.00% <0.00%> (ø)
...protocol/http/consumer/HttpClientGroupMapping.java	0.00% <0.00%> (ø)
...re/protocol/http/processor/HeartBeatProcessor.java	0.00% <0.00%> (ø)
...l/http/processor/LocalSubscribeEventProcessor.java	0.00% <0.00%> (ø)
...http/processor/LocalUnSubscribeEventProcessor.java	0.00% <0.00%> (ø)
... and 8 more

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