Dot style: Resize long name packages

[tfiers]

CompilerSupportLibraries_jll [fontsize = 10]
libblastrampoline_jll [fontsize = 12]
ConstructionBase [fontsize = 13]

It works, the multi font sizes.
Maybe an actual interpolation? From 14 (default fontsize) to 9 or sth, w/ len as input. Or
would it be too unsettling, all the sizes (and so, rather we'd have only say three sizes).

(from julia-sketches/pkgdepgraph-v2)