Feature Request: Weighted Density and Simplified Leiden Interface

Feature Request: Weighted Density and Simplified Leiden Interface: a task in LegoFlow-SWE (Harbor dataset). Two usability gaps exist in the current igraph C library that prevent convenient analysis of weighted graphs and community detection:

The task

Two usability gaps exist in the current igraph C library that prevent convenient analysis of weighted graphs and community detection:

Part of Lego-X/LegoFlow-SWE.