feat: add basic support for eth_call

[morph-dev]

What was wrong?

Trin doesn't support eth_call requests.

How was it fixed?

• Refactored the rpc/src/eth_rpc.rs
  • EvmBlockState now takes care of fetching all state related content for a specific block
• Using async evm execution from trin-execution crate

I tested it locally, with one simple transaction (token balance), and it works.

To-Do in future PRs

• Add caching to the EvmBlockState
  • this will speed up transaction execution as we wouldn't have to traverse entire trie for every piece of data
• Add support for fetching block_hash by block number
  • Until this is implemented in history network (https://github.com/ethereum/portal-network-specs/pull/334), we can fetch all blocks going backwards until we find the block that we need
  • low priority until lookup by block number is added
• Extract some common logic from trin-execution/src/evm into separate crate: e.g. trin-evm