Reimplement parts of Mina Explorer's GraphQL API here so exchanges could continue rely on them

Here's the [Schema](https://docs.minaexplorer.com/minaexplorer/graphql-getting-started#schema).

- https://github.com/o1-labs/Archive-Node-API/pull/126
- https://github.com/o1-labs/Archive-Node-API/pull/130