Move apollo-core, apollo-client, apollo-mockserver, apollo-openapi and apollo-client-config-data to apollo-java repo

[nobodyiam]

What's the purpose of this PR

Move apollo-core, apollo-client, apollo-mockserver, apollo-openapi and apollo-client-config-data to apollo-java repo, see #4427

Brief changelog

• move apollo-core to https://github.com/apolloconfig/apollo-java/tree/main/apollo-core
• move apollo-client to https://github.com/apolloconfig/apollo-java/tree/main/apollo-client
• move apollo-mockserver to https://github.com/apolloconfig/apollo-java/tree/main/apollo-mockserver
• move apollo-openapi to https://github.com/apolloconfig/apollo-java/tree/main/apollo-openapi
• move apollo-client-config-data to https://github.com/apolloconfig/apollo-java/tree/main/apollo-client-config-data

Follow this checklist to help us incorporate your contribution quickly and easily:

• Read the Contributing Guide before making this pull request.
• Write a pull request description that is detailed enough to understand what the pull request does, how, and why.
• Write necessary unit tests to verify the code.
• Run mvn clean test to make sure this pull request doesn't break anything.
• Update the CHANGES log.

[codecov]

Codecov Report

Merging #4594 (58e40b8) into master (f7e7100) will decrease coverage by 7.07%.
The diff coverage is n/a.

@@             Coverage Diff              @@
##             master    #4594      +/-   ##
============================================
- Coverage     53.40%   46.33%   -7.08%     
+ Complexity     2721     1560    -1161     
============================================
  Files           495      331     -164     
  Lines         15460    10356    -5104     
  Branches       1599     1042     -557     
============================================
- Hits           8257     4798    -3459     
+ Misses         6636     5261    -1375     
+ Partials        567      297     -270     

Impacted Files	Coverage Δ
...framework/apollo/openapi/dto/OpenNamespaceDTO.java
...ork/apollo/openapi/client/ApolloOpenApiClient.java
...apollo/openapi/dto/NamespaceGrayDelReleaseDTO.java
...mework/apollo/openapi/dto/NamespaceReleaseDTO.java
...ctrip/framework/apollo/openapi/utils/UrlUtils.java
...om/ctrip/framework/apollo/openapi/dto/BaseDTO.java
...trip/framework/apollo/openapi/dto/OpenPageDTO.java
.../openapi/client/service/ClusterOpenApiService.java
...p/framework/apollo/openapi/dto/OpenClusterDTO.java
...ework/apollo/openapi/dto/OpenNamespaceLockDTO.java
... and 18 more

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[Anilople]

LGTM

[mghio]

LGTM