Enhance Clustering Resolution Selection with Hierarchical Tree Visualization

[joe-jhou2]

What kind of feature would you like to request?

Additional function parameters / changed functionality / changed defaults?

Please describe your wishes

To assist users in selecting the appropriate clustering resolution and understanding the key genes driving cluster splits, implement a hierarchical tree visualization. This tree should illustrate how clusters evolve as the resolution increases, with each child node representing a finer cluster derived from its parent. Additionally, label each child node with the main driving genes that differentiate it from its parent cluster.
The result shown as

[joe-jhou2]

#3532

[joe-jhou2]

@flying-sheep Could you add this PR to the current milestone? Or it should pass all tests first? Thanks.