Automatic vendor library download

[ultrabug]

Hi, thanks for the plugin 👍

It would be nice not to have to handle the libraries download ourselves, I found the way that the mkdocs-mermaid2-plugin does it simple and cool.

Maybe you could inspire yourself from them and do something automagic for your plugin!

Just an idea to improve, feel free to close if you feel it's useless.

Cheers

[nook24]

I took a quick look at the source code and for me it looks like that if no own mermaid lib is defined they will use an external one.

https://github.com/fralau/mkdocs-mermaid2-plugin/blob/149a4b100454a05a4f14cccfd2acca605b0486e5/mermaid2/plugin.py#L20

I will leave this open for now, but I can't promise that it will be implemented one day. At the moment this plugin is in a very basic and simple stage which helps to reduce the required time for maintenance :)