## Summary
This PR implements a comprehensive EVM precompile registry system for
DataHaven, following Moonbeam's exact architecture and patterns. The
implementation includes:
- **Registry Precompile**: A new precompile at address `0x0815` (2069)
that manages and queries available precompiles
- **Core Ethereum Precompiles**: Standard Ethereum precompiles
(ECRecover, SHA256, RIPEMD160, Identity, ModExp, BN128Add, BN128Mul,
BN128Pairing, Blake2F, SHA3FIPS)
- **Modular Architecture**: Clean separation following Moonbeam's
structure with dedicated precompile modules per runtime
## Key Features
### Registry Precompile Functions
- `isPrecompile(address)`: Check if an address corresponds to any
precompile (active or inactive)
- `isActivePrecompile(address)`: Check if a precompile is currently
active in the runtime
- `updateAccountCode(address)`: Insert dummy EVM bytecode for Solidity
compatibility
### Runtime Integration
- Integrated across all three runtimes (testnet, stagenet, mainnet)
- Uses Moonbeam's `PrecompileSetBuilder` pattern for composable
precompile management
- Proper gas accounting with database read/write operations
- Access control through `CallableByContract` and `CallableByPrecompile`
traits
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Co-authored-by: undercover-cactus <lola@moonsonglabs.com>
