Helpers to querying raw state outside contracts

[Kayanski]

This PR aims at adding a simple helper to query raw state from outside contracts.
Types are derived automatically.

You can use the following syntax :

const TEST_ITEM: Item<TestItem> = Item::new("test-item");
const TEST_MAP: Map<String, TestItem> = Map::new("test-map");

let contract = Contract::new(chain);
contract.item_query(TEST_ITEM);
contract.map_query(MAP_ITEM, map_key);

Do you think we should use this instead :

TEST_ITEM.cw_orch_query(&contract)?;
MAP_ITEM.cw_orch_query(&contract, map_key)?;

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Additional details and impacted files

Files	Coverage Δ
contracts/mock_contract/src/lib.rs	97.9% <100.0%> (ø)
...ages/cw-orch-core/src/contract/interface_traits.rs	78.6% <100.0%> (ø)
...ages/cw-orch-core/src/environment/queriers/wasm.rs	100.0% <100.0%> (ø)

[Buckram123]

Nice syntax! Item and Map are the most common state objects, but it could be nice to have queries of any raw key as well. Easy to implement as well