src: lib: PWM: Add set_pwm_channel_duty_cycle #233

Job	Run time
quick-tests	1m 32s
version-manager	17s
build-cpp (armv7-unknown-linux-gnueabihf)	54s
build-cpp (aarch64-unknown-linux-gnu)	1m 2s
deploy-doc	2m 7s
build-python (aarch64, auto)	4m 10s
build-cpp (armv7-unknown-linux-musleabihf)	1m 5s
build-python (aarch64, musllinux_1_1)	2m 41s
build-cpp (aarch64-unknown-linux-musl)	57s
build-python (armv7, auto)	4m 10s
build-python (armv7, musllinux_1_1)	2m 36s
raspberry-test-python	34s
python-release-pypi	0s
release-assets	0s
	22m 5s

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