fix: import _compare_communities from igraph._igraph on the top level #1739

Job	Run time
Build wheels on Windows (Win32)	8m 45s
Build wheels on Linux (aarch64/manylinux)	15m 58s
Build wheels on Linux (x86_64)	24m 32s
Build wheels for WebAssembly	6m 12s
Build wheels on Linux (aarch64/musllinux)	6m 13s
Build wheels on Linux (i686)	19m 48s
Build wheels on Windows (x64)	25m 59s
Build wheels on macOS (x86_64)	17m 44s
Build wheels on macOS (arm64)	8m 31s
Build with sanitizers for debugging purposes	2m 43s
Build sdist and test extra dependencies	2m 13s
Build wheels on Linux (aarch64/musllinux)	6m 19s
Build wheels on macOS (x86_64)	17m 44s
Build wheels on Linux (aarch64/manylinux)	15m 58s
Build wheels for WebAssembly	6m 12s
Build wheels on Linux (x86_64)	24m 32s
Build sdist and test extra dependencies	2m 13s
Build wheels on macOS (arm64)	8m 31s
Build wheels on Linux (i686)	19m 48s
Build with sanitizers for debugging purposes	2m 43s
Build wheels on Windows (Win32)	8m 45s
Build wheels on Windows (x64)	25m 59s
Build wheels on Linux (aarch64/musllinux)	9m 13s
Build wheels on Linux (x86_64)	24m 32s
Build wheels for WebAssembly	6m 12s
Build wheels on Linux (aarch64/manylinux)	15m 58s
Build wheels on macOS (arm64)	8m 31s
Build wheels on Linux (i686)	19m 48s
Build wheels on Windows (Win32)	8m 45s
Build sdist and test extra dependencies	2m 13s
Build with sanitizers for debugging purposes	2m 43s
Build wheels on Windows (x64)	25m 59s
Build wheels on macOS (x86_64)	17m 44s
	6h 59m 0s

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