feat(rocksdb): add optional ToplingDB integration

[kenssa4eedfd]

Purpose of the PR

This PR introduces ToplingDB as an optional RocksDB-compatible storage engine
for HugeGraph.

ToplingDB is explicitly enabled through configuration. Standard RocksDB remains
the default, so existing deployments and data paths are unaffected unless
rocksdb.provider=topling is configured.

Main Changes

• Add explicit storage engine selection through rocksdb.provider.
• Integrate ToplingDB with HugeGraph Server, PD, and Store.
• Use ToplingDB Easy Migrate YAML configuration while continuing to use the
  standard RocksDB Java API.
• Add component-specific configurations for Server, PD, and Store, including
  separate HTTP ports and JRaft column-family settings.
• Add startup scripts that:
  • Select and preload the ToplingDB JNI library.
  • Extract required native libraries and Web UI resources.
  • Configure LD_PRELOAD, LD_LIBRARY_PATH, and
    TOPLINGDB_EASY_MIGRATE_CONF.
  • Validate the operating system and architecture.
  • Verify downloaded dependencies using SHA-256.
  • Handle jemalloc and Ubuntu 24.04 libaio compatibility.
• Align the RocksDB JNI version across Server, PD, and Store.
• Update CI workflows to install and test the ToplingDB runtime dependencies.
• Update third-party dependency metadata, LICENSE information, operational
  documentation, troubleshooting guides, and security notes.

Compatibility

• Standard RocksDB remains the default provider.
• Existing RocksDB data and APIs remain compatible.
• ToplingDB is enabled only when rocksdb.provider=topling is configured.
• No public HugeGraph API changes are introduced.
• The bundled ToplingDB runtime currently targets Linux x86_64.

Verifying these changes

• Trivial rework / code cleanup without any test coverage. (No Need)
• Already covered by existing tests, such as (please modify tests here).
• Need tests and can be verified as follows:
  • Build all modules:

    mvn clean compile -Dmaven.javadoc.skip=true                                                                                                                                                        

  • Run HugeGraph Server tests with the RocksDB backend:

    mvn test -pl hugegraph-server/hugegraph-test -am \                                                                                                                                                 
      -P core-test,rocksdb                                                                                                                                                                             

  • Run PD tests:

    mvn install -pl hugegraph-struct -am -DskipTests                                                                                                                                                   
    mvn test -pl hugegraph-pd/hg-pd-test -am                                                                                                                                                           

  • Run Store tests:

    mvn test -pl hugegraph-store/hg-store-test -am                                                                                                                                                     

  • Verify Server, PD, and Store startup in both standard RocksDB mode and
    ToplingDB mode.

Does this PR potentially affect the following parts?

• Dependencies
• Modify configurations
• The public API
• Other affects: startup scripts, native library loading, and CI workflows
• Nope

Documentation Status

• Doc - TODO
• Doc - Done
• Doc - No Need

[codecov]

Codecov Report

❌ Patch coverage is 33.33333% with 2 lines in your changes missing coverage. Please review.
✅ Project coverage is 34.70%. Comparing base (431f6e6) to head (2c907fc).

Files with missing lines	Patch %	Lines
...a/org/apache/hugegraph/pd/store/HgKVStoreImpl.java	0.00%	1 Missing ⚠️
...raph/backend/store/rocksdb/RocksDBStdSessions.java	50.00%	1 Missing ⚠️

❗ There is a different number of reports uploaded between BASE (431f6e6) and HEAD (2c907fc). Click for more details.

HEAD has 4 uploads less than BASE

Flag	BASE (431f6e6)	HEAD (2c907fc)
	5	1

Additional details and impacted files

@@             Coverage Diff              @@
##             master    #3134      +/-   ##
============================================
- Coverage     41.06%   34.70%   -6.37%     
+ Complexity      519      498      -21     
============================================
  Files           771      782      +11     
  Lines         65962    67113    +1151     
  Branches       8766     8963     +197     
============================================
- Hits          27088    23292    -3796     
- Misses        36008    41216    +5208     
+ Partials       2866     2605     -261     

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