chore: fail on docs warnings and export missing types

[matus-vacula]

No description provided.

[roncohen]

thanks! There are some types that we purposefully didn't export but that we are still using.
For example, this is not that useful to have in the list of exported types in the docs:

type EmptyFeatureRemoteConfig = { key: undefined; payload: undefined };

It would be fine that the docs just wrote those out, so that instead of

type SomeType = SomeOtherType | EmptyFeatureRemoteConfig

it would be

type SomeType = SomeOtherType | { key: undefined; payload: undefined };

So the idea was that it would just document those unexported typed as a copy of their definition rather than refer to them by name and then expose a hole bunch of simple/useless names types.

It looks like https://github.com/Gerrit0/typedoc-plugin-missing-exports actually does this. Are you familiar with that by any chance?

[roncohen]

Never mind, that doesn't do what I hoped:

[roncohen]

actually this might still be better. The idea is to keep what the SDK exposes minimal. We still want it to be documented though, so maybe this is a good middle way.. hmm

[roncohen]

never mind, lets just get this in for now.