`Admin` type of cw-controllers should have helper method for raw querying

Would be nice to have query method: https://docs.rs/cw-storage-plus/latest/cw_storage_plus/struct.Item.html#method.query of `Admin` exposed

Inspect the cw-controllers source for the Admin type and compare its API with the linked cw-storage-plus Item::query documentation. Expose a raw-query helper on Admin, with completion confirmed when callers can perform the corresponding query through Admin.

Written by the indexing model from the issue text.