[DRAFT] Refactor Queries.rs to All TestContextQuery

[lexzaiello]

Closes #24 #23 #22 #11 . This PR mainly refactors queries.rs to all use the existing TestContextQuery pattern, instead of argument-based queries. These queries are used in very few places, so now was the best time to migrate them. Furthermore, in doing so, this PR enables chain-agnostic tx_build_xyz calls, which allows, for example, instantiating an astroport factory on Osmosis. This is required for passive concentrated liquidity tests.

Todo

• Handle gov prop stuff for whitelisting PCL contracts on Osmosis

Summary of Changes

• Refactor all queries to TestContextQuery
• Add .with_chain to all necessary builders
  • For example, build_tx_upload_contracts, which does not take a chain at all and assumes Neutron
• Remove singleton contract instantiation information from the top-level TestContext (allows instantiating a factory, for example, on Osmosis and Neutron), in favor of LocalChain-specific singleton-style instantiations