Truncate long package names

[tfiers]

Via https://github.com/tfiers/PkgGraph.jl/issues/86#issuecomment-1384618323

This one for long labels is nice too: CompilerSupportLibraries_jll [label="CompilerSuppo…_jll"] (better than newline)

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A useful thing to know to decide threshold:

• [ ] "what is 80 percentile package name length?"

  • [moved to

    • 89

    ]