Type hint for all generic props for `idom.html`

[Archmonger]

Current Situation

There currently are no type hints for idom.html props.

Proposed Actions

We should probably long-form type-hint them for developer's convenience. We can find all available props in the react docs.

I've written a basic parser that digests the ReactJS docs and outputs names/type pairs.

https://gist.github.com/Archmonger/8d01d2efba1071f4950549004719eb19

In order to be used effectively, this will require this issue to be resolved within VSCode:

• Completion suggestion does not pop up automatically for TypedDict microsoft/pylance-release#3710

[Archmonger]

VS Code now supports auto-completion for TypeDicts.

[Archmonger]

Resolved in #1281