docs: add sciunit dependency management to manual (#4024) #407

Job	Run time
build-native-linux (almalinux8)	5m 58s
build-conda-macos-arm64 (macos-14)	5m 10s
build-conda-macos-x86_64 (macos-14)	4m 42s
build-conda-linux	6m 26s
build-conda-macos-x86_64 (macos-13)	8m 6s
build-native-linux (almalinux9)	7m 16s
lint	35s
build-native-linux (ubuntu20.04)	5m 32s
build-native-linux (ubuntu22.04)	5m 32s
build-native-linux (ubuntu24.04)	6m 57s
	56m 14s

Provide feedback