DatabasePropertyConfigResponse is a local type

[aDogCalledSpot]

Describe the bug
When fetching a database, there isn't a way to properly cast a property to the proper type it's supposed to be since these types aren't exported.

To Reproduce
Notion JS library version: current master

Relevant line of code

example:

const response = await notion.databases.retrieve({ database_id });
const options = response.properties["My Select Property"].select; // Won't compile

Expected behavior
I would expect type safety when inspecting the properties in my database.

[aDogCalledSpot]

Same deal with UpdateDatabaseBodyParameters

[LoganTann]

Yep, it's very painful to work with these types unavailable, especially when using Typescript.

The same stands for DatabaseObjectResponse