graphviz: add to the superbuild
The following discussion from !1041 (merged) should be addressed:
-
@ben.boeckel started a discussion: We should have
graphviz
in the superbuild instead of relying on the system to provide it.
We currently rely on the CI image to provide graphviz' SDK. Instead, the superbuild should provide it. This also means that PARAVIEW_ENABLE_NODEEDITOR
can go away in favor of ENABLE_graphviz
(which should be handled and ported as needed).