Add satisfies type assertion for typescript

[drewatk]

Fixes #4772

Adds a satisfies assertion to the live resolver import:

import {User as userRelayModelInstanceResolverType} from "UserTypeResolvers";
// Type assertion validating that `userRelayModelInstanceResolverType` resolver is correctly implemented.
// A type error here indicates that the type signature of the resolver module is incorrect.
(userRelayModelInstanceResolverType satisfies (
  id: User__id$data['id'],
  args: void,
) => LiveState<mixed>);

It will also require a minimum Typescript version of TS 4.9 or higher for consumers, which can be checked as we implement #4755. We may have to have add a feature flag to disable this for consumers of the library which do not meet this minimum standard.

[captbaritone]

Nice!!

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@captbaritone merged this pull request in 575f206.