Smart local moving algorithm(SLM) with `PIE` model

Implement the clustering task algorithm: Smart local moving algorithm(SLM) with `PIE` model.

Paper: https://arxiv.org/pdf/1308.6604.pdf

Implement a community detection algorithm: Leiden with PIE model: https://github.com/iosonofabio/slmpy

Start by reading the linked paper and the referenced slmpy implementation to understand the SLM and PIE models. Then locate GraphScope's clustering-task entry point and existing community-detection tests; done means the Leiden algorithm with the PIE model is implemented and validated against the intended behavior.

Written by the indexing model from the issue text.