Hand editing YAML without schema types/autocomplete is a time-sink

I'm not sure the best solution (if one doesn't already exist) -- but every time I have to hand-edit the `config.yml` file -- a part of me dies inside knowing how much time and mental energy is being wasted. I'm not sure if there is some kind of LSP for yaml that can take in a url to a schema and provide autocomplete in VSCode, but if not, there's got to be something we can do.

Simply having a typescript definition of the schema would allow me to author it in typescript and generate the yaml file myself if need-be. I imagine this already exists somewhere?

Something modern like the [config of TinaCMS](https://tina.io/docs/extending-tina/overview/) would save countless people countless hours!

Apologies if there is already a solution to this that has eluded me! If so, I would really appreciate some advice :)

And of course, thank you all for all the hard work on Decap!!