fphammerle/yamily: Define family trees in YAML @ 2fff9f3539580c44256c599f9b3fc47a15aea0c3

Fabian Peter Hammerle bd920b7751 added cli entrypoint `yamily-dot`		6 lat temu
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cli	bd920b7751 added cli entrypoint `yamily-dot`	6 lat temu
persons	bd920b7751 added cli entrypoint `yamily-dot`	6 lat temu
person_collection.py	f13d438e9c added cli entry point `yamily-list`	6 lat temu