Runtime Changes of RFC-1481 and DIP-7

[aurexav]

Rationale

1. Smart contract upgrades have increased flexibility.
2. Minimize precompile works at the low-level.
3. The standard contract ABI and source code provide enhanced scalability for DApp developers.
4. Leverage existing governance components from the EVM ecosystem to improve integration, aligning with user familiarity.

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• [ ] Implement a pallet to record specific contract addresses authorized for system-level calls, also known as the whitelist.
• [x] Create darwinia-deposit through smart contract implementation.
• [x] Create darwinia-staking through smart contract implementation.
• [ ] Establish governance components with a smart contract or utilize an existing framework.
• [x] Implement a governance ticket to grant voting rights to tokens (RING/KTON) that are locked in external systems.

[hackfisher]

https://github.com/orgs/darwinia-network/discussions/1481