Schema updates

[i-norden]

Final schema review and refactor:

• Remove BaseFee from header_cids
• Add Coinbase to header_cids
• Add Value to transaction_cids
• Reorder columns for csv loading; reorder to match the statements here: https://github.com/vulcanize/go-ethereum/blob/postgres_refactor/statediff/indexer/database/file/writer.go#L120

I'm also wondering if we really need to store TxData and LogData blown out into transaction_cids and log_cids, respectively. I can imagine some instances where we would want to search on them but they also are the two largest fields of these types to duplicate.

[AFDudley]

I'm also wondering if we really need to store TxData and LogData blown out into transaction_cids and log_cids, respectively. I can imagine some instances where we would want to search on them but they also are the two largest fields of these types to duplicate.

These are fairly complex design questions that have to do with how "eth watcher" (which is what this service should actually be called) interacts with the other watchers in the system.

[i-norden]

@AFDudley Going to leave tx_data and log_data in for now, it would be relatively quick and cheap to go and drop these columns from the database later on but extremely expensive to add them back.