enhancement(sdk): extend the public type api

[Convly]

What does it do?

Add four new types and interfaces to the public SDK surface:

• Strapi represents the sdk instance API
• StrapiConfig is the configuration object that is used to configure the strapi instance
• CollectionTypeManager is the object returned by a call to client.collection('<ct>')
• SingleTypeManager is the object returned by a call to client.single('<st>')

Why is it needed?

Allow users to reference common sdk objects in their code without having to infer them from values

How to test it?

• Build the bundles & setup the demos
• Head to the TS demo
• You should be able to import the types and use them as expected. You should not be able to use them as values.

Related issue(s)/PR(s)

resolves #33

[innerdvations]

This is a good compromise (compared with exporting everything), especially since all of these are so directly touched by the user anyway.

Do you foresee any difficulties exposing CollectionTypeManager and SingleTypeManager considering the plans to add typings based on the project schemas?

[Convly]

Do you foresee any difficulties exposing CollectionTypeManager and SingleTypeManager considering the plans to add typings based on the project schemas?

I don't forecast any difficulty with that to be honest. But if we end up having breaking changes we could just use the occasion to release v2

[innerdvations]

Works for me!