Koto support and Scripting API

[rsaccon]

First thanks for creating this amazing software.

I made Koto scripting for Fidget https://github.com/rsaccon/fidget-koto

I adapted the fidget-viewer demo app and ported all the models to Koto.

Feature request:
API / abstractions for pluggable scripting engines: e.g.: Engine could define traits for run and eval, and ScriptContext and DrawShape maybe should not be tight to the Rhai implementation.

[mkeeter]

Very cool! I hadn't heard of Koto before, so I'll check it out.

I'd be happy to add a "Third-party projects using Fidget" section to the repo and link to your repo, if you want it to be more public.

Right now, I'm working out how to build a standard library of shapes / transforms, then expose them in Rust / scripting / GUIs (hopefully automatically). This means that the APIs / abstractions will remain in flux while I'm experimenting with different designs, so I can't promise stability anytime soon 😅

Still, if you have a not-too-disruptive trait in mind, I'd be happy to take a look at a PR.

[rsaccon]

Ok, thanks, feel free to add my repo to that future third-party section.

About the request for a probably-for-now pre-mature abstraction, no urgent need for that, for now it is probably better if I just try to keep my repo compatible with whatever API design iteration you are going through.