Added type hints #586

Job	Run time
macOS 10.10 x86_64	20m 48s
macOS 10.13 x86_64	20m 46s
sdist	27s
Windows x86	22m 13s
macOS 10.15 x86_64	13m 55s
macOS arm64	20m 1s
Windows AMD64	31m 49s
manylinux2014 and musllinux x86_64	38m 29s
Windows ARM64	10m 22s
manylinux_2_28 x86_64	19m 12s
manylinux2014 and musllinux aarch64	51m 42s
manylinux_2_28 aarch64	27m 46s
Upload wheels to scientific-python-nightly-wheels	0s
Upload release to PyPI	0s
	4h 37m 30s

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