[FR] TikzGraphs as conditional dependency + text-based output method

[svilupp]

Thank you for the great package!

Unfortunately, TikzGraphs dependency makes it impossible to add for users with M1 Macs. It's linked to Tectonic binaries (see link), which get pulled in with TikzGraphs->TikzPictures->Tectonic.

I'd be happy to open a PR to add a fallback text-based output and load plotting with TikzGraphs via Requires.

Otherwise, I've tested the functionality (by dev'ing and removing manually the Tikz dependencies) and all seems to work as expected.

[mschauer]

Please make a PR, that would be great!

[svilupp]

Sorry for being so slow!

Two questions that will help me focus energy:

• Should I write the conditional deps in the new "package extensions" style that is backwards compatible? (PGFXPlotx example here) Or rather stick to Requires.jl?
• I have not found a simple generic way to display a graph via text without too much effort. I'm considering just sorting them printing a bit and then printing the edge in a tabular format (ala TabularDisplay) - It's better than nothing having an output at all. Would that be sensible?

[mschauer]

Let's go by "Perfect is the enemy of good"? Tabular display would be helpful and only do the new style if it doesn't stall you. I am happy anyway if you and me are able to fix the problem.

[mschauer]

Closed by #74