feat(server): integrate server-hstore into hugegraph

[VGalaxies]

subtask of #2265

When introducing hstore, server-core needs corresponding modifications. Except for BytesBuffer.java in hugegraph-server/hugegraph-core/src/main/java/org/apache/hugegraph/backend/serializer/, other files should be consistent with the pd-store branch.

[codecov-commenter]

Codecov Report

Attention: Patch coverage is 22.40664% with 187 lines in your changes are missing coverage. Please review.

Project coverage is 56.87%. Comparing base (2b3bc4f) to head (a441f4e).

Files	Patch %	Lines
...gegraph/backend/query/serializer/QueryAdapter.java	12.32%	64 Missing ⚠️
...apache/hugegraph/backend/query/ConditionQuery.java	13.51%	32 Missing ⚠️
.../org/apache/hugegraph/backend/query/Condition.java	7.14%	24 Missing and 2 partials ⚠️
.../java/org/apache/hugegraph/type/HugeTableType.java	0.00%	22 Missing ⚠️
...nd/query/serializer/AbstractSerializerAdapter.java	8.33%	11 Missing ⚠️
...ache/hugegraph/backend/serializer/BytesBuffer.java	0.00%	11 Missing ⚠️
...java/org/apache/hugegraph/backend/query/Query.java	68.18%	6 Missing and 1 partial ⚠️
...gegraph/backend/serializer/BinaryBackendEntry.java	0.00%	4 Missing ⚠️
.../hugegraph/backend/store/AbstractBackendStore.java	0.00%	3 Missing ⚠️
.../main/java/org/apache/hugegraph/type/HugeType.java	50.00%	1 Missing and 1 partial ⚠️
... and 5 more

Additional details and impacted files

@@             Coverage Diff              @@
##             master    #2534      +/-   ##
============================================
- Coverage     57.14%   56.87%   -0.28%     
- Complexity      827      829       +2     
============================================
  Files           608      612       +4     
  Lines         49415    49649     +234     
  Branches       6645     6673      +28     
============================================
- Hits          28238    28236       -2     
- Misses        18361    18597     +236     
  Partials       2816     2816              

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[javeme]

prefer hg => hugegraph

[imbajin]

prefer hg => hugegraph

we'll delete all prefix together later (include change the name of server)