Moving the ethgo to individual packages

big.go

block.go

block_manager.go

bytes.go

contract.go

dagger.go

database.go

database_test.go

dev_console.go

encoding.go

encoding_test.go

ethereum.go

genesis.go

memory_database.go

parsing.go

parsing_test.go

rlp.go

server.go

transaction.go

trie.go