fix: define types versions covering all import options

[fpdrozd]

Description

This PR adds typesVersions property to package.json files of storefront sdk and platform sdk that points to the same type definitions for all /dist/... imports.

Before, only importing the sdks by name included type definitions:

import { makeClient } from '@spree/storefront-api-v2-sdk';

While specifying an explicit path didn't, resulting in a "Cannot find module ... or its corresponding type declarations" error:

import { makeClient } from '@spree/storefront-api-v2-sdk/dist/server';
// or
import { makeClient } from '@spree/storefront-api-v2-sdk/dist/server/index';

This issue was also present in v5.1.6 of the storefront sdk (before we started splitting up the project into multiple packages).