Requirements for passing the add11 state test

[s1na]

In order for the EVM EE to pass the add11 we need the logic for the following points:

• [ ] Send coinbase address as input to EE
• [ ] Deduce base tx fee from sender to coinbase
• [ ] Meter EVM opcodes and deduce from sender to coinbase
• [ ] Implement SSTORE which itself requires logic for inserting new nodes in a trie, and updating the contract with new storage hash