feat: Graph.Nearest_Neighbor_Graph() #1947

Job	Run time
Build wheels on Linux (aarch64/musllinux)	3m 27s
Build wheels on Linux (aarch64/manylinux)	4m 1s
Build wheels on Linux (x86_64)	5m 26s
Build wheels for WebAssembly	7m 25s
Build wheels on Windows (x64)	7m 19s
Build wheels on Windows (Win32)	7m 19s
Build wheels on Windows (ARM64)	7m 16s
Build with sanitizers for debugging purposes	2m 50s
Build sdist and test extra dependencies	3m 59s
Build wheels on macOS (x86_64)	6m 27s
Build wheels on macOS (arm64)	6m 12s
	1h 1m 41s

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