Create separate schemas for query request_type options

[eclipseeer]

It this moment we have a one general schema - RpcQueryResponseSchema - for all request_type options - view_account, view_access_key etc.
Would be nice to create a separate shema per option, for example RpcQueryViewAccountResponseSchema - it will return the exact type instead of union, and eliminate a need to use if to get a real response type.

const parsed = RpcQueryResponseSchema().parse(camelCased);
if (!('keys' in parsed)) throw new Error('Invalid query response');