Add REVM-based EVM module

[abukosek]

Current status:

• Basic EVM functionality works and e2e tests pass
• Precompiles implemented:
  • Ethereum standard (ecrecover, sha256, ripemd160, identity, bn128::{add,mul,pair}, blake2, modexp)
  • Oasis-specific SHA2 (sha512_256, sha512, sha384)
  • Oasis-specific confidential (x25519_derive, deoxysii_seal, deoxysii_open, keypair_generate, sign, verify, curve25519_compute_public)

Precompiles to do (sorted easy to hard):

• [ ] Oasis-specific confidential: random_bytes (problem: need to pass storage backend to precompile)
• [ ] Oasis-specific confidential: gas_used, pad_gas (problem: revm doesn't export gas used so far to precompiles)
• [ ] Oasis-specific general: subcall (problem: how to do this with revm?)

Other things to do:

• [X] Fix nonce updating -- kind of done, someone please check.
• [ ] Port the precompiles I implemented previously for revm v56 to the new v66, which has changed the entire API :/
• [ ] Port testing framework for precompiles from old EVM module
• [ ] Transfer event doesn't seem to be emitted by revm (test_transfer_event), look into this.

The plan is to get this PR into a mergeable state by fixing nonce updates and then implement the rest via smaller PRs.

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