Docs (setup): Add documentation on using the project as an independent project #86

Job	Run time
test-powershell-6-1-container	17s
test-powershell-5-1-windows-2019	1m 25s
test-powershell-5-1-windows-2022	1m 34s
test-powershell-6-2-container	14s
test-powershell-7-0-container	21s
test-powershell-7-1-container	23s
test-powershell-7-2-container	15s
test-powershell-7-3-container	15s
test-powershell-7-4-container	25s
test-powershell-core-linux	16s
test-powershell-core-windows	1m 0s
test-powershell-core-macos	18s
	6m 43s

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