[XCM] Empowered cross-chain origins

[acatangiu]

Description

• Consolidate and align location to account derivation - so that the same account is derived on all ecosystem parachains for consistency and better UX,
• Support permissionless Origin Aliases across chains - to support local accounts to allow other locations (or derived accounts) to alias them,
• Support single or multi-hop asset transfers that preserve the original origin - to allow users to transfer assets, pay for fees and Transact in a single XCM program.

Progress

• feat: align LocationToAccountId derivation polkadot-fellows/runtimes#67
• Add xcm_runtime_apis::conversions::LocationToAccountApi to all runtimes polkadot-fellows/runtimes#413
• RFC: Asset transfers can alias XCM origin on destination to original origin polkadot-fellows/RFCs#122
• Implement in XCMv5 [xcm-v5] implement RFC#122: InitiateTransfer can alias XCM original origin on destination #5971
• Integrate XCMv5 to Polkadot-SDK: XCM v5 #4826
• XCM: Arbitrary Origin Aliases #722
• Released in Polkadot-SDK: stable2412
• live on testnets
• Audited
• Released in SDK
• Docs
• Guide
• [UX improvement] allow signed account to be aliased between system chain polkadot-fellows/runtimes#635
• Integrated to Fellowship Runtimes
• Live on Kusama
• Live on Polkadot

[acatangiu]

Related:

• added location conversion tests to relay and parachains polkadot-fellows/runtimes#485