Shade org.roaringbitmap packages

In [#2390](https://github.com/apache/fluss/pull/2390), we introduced a dependency on RoaringBitmap. However, this is a widely used library across the ecosystem, and different projects depend on maybe incompatible versions (e.g., Paimon uses 1.2.1, while Flink uses 1.3.0).

To avoid version conflicts and ensure compatibility in mixed-classpath environments (such as Flink jobs that use both Fluss and Paimon), we should shade the RoaringBitmap dependency and use the shaded version internally.

Start by reviewing the dependency introduced in pull request #2390 and the repository's build configuration for RoaringBitmap. Trace how the shaded artifact is assembled and verify that Fluss uses the shaded package internally without conflicts alongside Paimon or Flink versions.

Written by the indexing model from the issue text.