Support "infer" types

[resolritter]

note: This is on top of #123, so that it can be built properly

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Test cases have been adapted from Type inference in conditional types, except for the following scenario

type ReturnType<T extends (...args: any[]) => infer R> = R; // Error, not supported

Since it's not supported by TypeScript, it's not handled here, either.

closes #101

[mjambon]

Looks great to me. Can we have your stamp of approval, @maxbrunsfeld? (It's a simple extension)

[mjambon]

@resolritter you'll have to generate the files for both typescript and tsx (I use e.g. (cd tsx && npx tree-sitter generate)).

[resolritter]

@resolritter you'll have to generate the files for both typescript and tsx (I use e.g. (cd tsx && npx tree-sitter generate)).

npm run build seems to work for generating both TSX and TypeScript

[mjambon]

@resolritter good to know. Thanks.