[lake/hudi] Introduce fluss-lake-hudi module and HudiLakeStorage

[fhan688]

Purpose

Linked issue: #3258

Introduce an initial Hudi LakeStorage plugin module for Fluss and wire it into build/distribution, so Hudi can be recognized as a supported data lake format.

Brief change log

• Add HUDI("hudi") to DataLakeFormat.
• Introduce new module fluss-lake-hudi.
• Add HudiLakeStorage and HudiLakeStoragePlugin as the initial Hudi LakeStorage implementation scaffold.
• Register LakeStoragePlugin via service loader metadata.
• Include the new module in lake parent modules and distribution/plugin assembly.
• Update quickstart-flink build preparation to include hudi plugin artifact.

Tests

• This commit mainly introduces module/plugin scaffolding and build wiring.

• Suggested verification:

mvn -pl fluss-lake/fluss-lake-hudi -am clean test
mvn -pl fluss-dist -am clean package -DskipTests

• No dedicated Hudi functional UT/IT is included in this commit.

API and Format

• API impact: additive change by introducing HUDI in DataLakeFormat.
• No storage format migration or incompatible format change in this PR.

Documentation

• No user-facing documentation changes in this PR.
• Hudi usage/configuration docs can be added in a follow-up PR.