feat: fn/func in nodes

[miko3k]

Why

#239

What

please note that this PR also changes package.json a bit to enable both yarn test and yarn test-all to work

• bringing relevant typing to sync with r144
• general improvements of FunctionNode/FunctionCallNode with generics modelling the required parameter
  • note that func returning ShaderNode was a hack, in reality it was something ShaderNode-like (having call-method accepting Swizzable). FunctionNode as the generic parameter was plainly wrong.
• automatically generate proxified versions of parameters of FunctionNode using mapped type Fn
• fn/func take same generic argument as FunctionNode
• MakeObjectOption was renamed to Proxied, I added some comments although I am still not too happy
• relevant tests
• newly defined types:
  • FunctionNodeArguments, pretty self-explanatory
  • Fn converts FunctionNodeArguments into Proxied version of it

Checklist

• Checked the target branch (current goes master, next goes dev)
• Added myself to contributors table
• Ready to be merged

[joshuaellis]

Great work!