Add type-level inference for query, procedure, and subscription

[jphastings]

Hey @tylersayshi, I needed inference for query, procedure, and subscription types, so thought I'd give it a crack.

I'd appreciate feedback!

const getUser = lx.lexicon("com.example.getUser", {
	main: lx.query({
		parameters: lx.params({
			did: lx.string({ required: true, format: "did" }),
		}),
		output: {
			encoding: "application/json",
			schema: lx.object({
				name: lx.string({ required: true }),
				bio: lx.string(),
			}),
		},
	}),
});

type GetUser = (typeof getUser)["~infer"];
// {
//   $type: "com.example.getUser"
//   parameters: { did: string }
//   output: { name: string; bio?: string | undefined }
// }

[tylersayshi]

looks good! huge thanks for continuing to share improvements here!! 🎉