Use local version of mermaid.min.js

[vincentdephily]

The generated html currently fetches mermaid.min.js from a cdn on the internet, which is best practice in some contexts but is I think the wrong default in this case : rustdocs can normally be generated and viewed offline. They should also be impervious to API or url changes 10 years down the road, firewalls, etc.

I think that mermaid.min.js should be saved alongside sidebar-items.js. Not sure if there's a rustdoc naming convention to adhere to (like "cratename.crateversion.normalname") to avoid conflicts with a similar tool.

[mersinvald]

Agreed, I'll see how that can be achieved, thanks for the proposal

[mdaj06]

@mersinvald can i take a look at this? i am pretty new to the Rust ecosystem

[mersinvald]

@mdaj06 absolutely, I'll be very grateful if you do :)