[type:refactor] refactor cache and add endpoint to expose cache

[moremind]

Fixes #4641

1. clean match cache
2. expose endpoint

Make sure that:

• You have read the contribution guidelines.
• You submit test cases (unit or integration tests) that back your changes.
• Your local test passed ./mvnw clean install -Dmaven.javadoc.skip=true.

[codecov-commenter]

Codecov Report

Merging #4658 (5ac502f) into master (347b406) will decrease coverage by 0.15%.
The diff coverage is 33.33%.

@@             Coverage Diff              @@
##             master    #4658      +/-   ##
============================================
- Coverage     66.91%   66.77%   -0.15%     
+ Complexity     8005     8001       -4     
============================================
  Files          1099     1099              
  Lines         31758    31789      +31     
  Branches       2874     2878       +4     
============================================
- Hits          21252    21228      -24     
- Misses         8829     8867      +38     
- Partials       1677     1694      +17     

Impacted Files	Coverage Δ
...pache/shenyu/plugin/base/AbstractShenyuPlugin.java	57.81% <0.00%> (+4.16%)	⬆️
...apache/shenyu/plugin/base/cache/MetaDataCache.java	0.00% <0.00%> (ø)
...org/apache/shenyu/plugin/base/trie/ShenyuTrie.java	75.43% <0.00%> (-0.66%)	⬇️
.../shenyu/web/endpoint/ShenyuControllerEndpoint.java	0.00% <0.00%> (ø)
...pache/shenyu/plugin/base/cache/MatchDataCache.java	71.79% <35.29%> (-28.21%)	⬇️
.../plugin/base/cache/CommonPluginDataSubscriber.java	62.50% <40.90%> (-3.41%)	⬇️
...pringboot/starter/gateway/ShenyuConfiguration.java	88.88% <100.00%> (ø)
...e/shenyu/web/controller/LocalPluginController.java	87.61% <100.00%> (ø)

... and 21 files with indirect coverage changes

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