XCQ Use Cases: Runtime API

[xlc]

This issue is to collect key use cases for XCQ with Runtime API. i.e. usage with dApps or wallets. The use cases here will be used to validate XCQ spec to ensure they can be supported. We will also pick use cases here for PoC and examples.

• Improve XCM bridge UI
  • Use XCQ to query asset balances
  • Query XCM weight and fee from hop and dest chain
• Wallet
  • Use XCQ to query asset balances
  • Use XCQ to query weights and fees for related operations from different chains
• Universal dApp that supports all the parachains
  • Use XCQ to perform feature discovery
  • Use XCQ to query pallet specific feature
  • Use XCQ to help construct extrinsic by querying pallet index, call index, etc