Add docstring generation for Python wrapper #3740

Job	Run time
check-paths	2s
ubuntu-20.04-gcc-9 Release Python 3	7m 16s
ubuntu-20.04-clang-9 Release Python 3	8m 10s
macos-13-xcode-14.2 Release Python 3	7m 56s
macos-14-xcode-15.4 Release Python 3	5m 50s
windows-2022-msbuild Release Python 3	8m 30s
	37m 44s

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