Bug fixes for endianness between boundaries

[sieniven]

Summary

• Fixes to inconsistencies in converting to U256 type on Rust to pass by u64 instead between cross boundaries.
• Fixes to all inconsistencies in converting to H256 type on Rust to pass hashes by strings instead.
• All EVM sender addresses on consensus and on miner will now be indexed with the sender address which is in string type.
• When passing hash values into EVM side, we will convert them from Rust string types.
• When passing hash values into DVM side, we will convert them from strings to BTC internal hash representation, which is stored in little endian.

Context

1. Rust U256:

• From: takes a big endian byte array, stores as little endian.
• To: outputs a big endian byte array.

2. BTC U256:

• Stored as little endian, with the exception of Witness16EthHash
• GetByteArray returns byte array in big endian.

Implications

• Storage

  • Database reindex required
  • Database reindex optional
  • Database reindex not required
  • None

• Consensus

  • Network upgrade required
  • Includes backward compatible changes
  • Includes consensus workarounds
  • Includes consensus refactors
  • None