Create an apio package for graphviz (dot)

[zapta]

The command dot from the graphviz suite is required for the apio graph command but is not installed by apio. This issue is for having that package also installed and managed by apio, similar to oss-cad-suite and examples.

I will try to create a proof of concept and will report here. Hopefully there are sufficient binaries on the graphviz so we don't need to build them ourselves.

https://gitlab.com/graphviz/graphviz/-/releases