Refactor the ApiObjectSpec type

[kamarmack]

Make it something generic such as:

export type ApiObjectSpec<
	T extends string = string,
	U extends Record<T, YupTypes.AnySchema> = Record<string, YupTypes.AnySchema>,
	V extends T = T,
> = ReturnType<
	typeof getApiObjectSpec<T, U, V>
>;

The refactor should allow for typed arguments such as this

(apiObjectSpec: ApiObjectSpec) => { ... }