Add genesis block, accounts at archive startup

[psteckler]

When starting the archive process, if a runtime config is provided, archive the genesis block into the blocks table, and the genesis accounts into the accounts_accessed table. The archive processor creates an internal ledger for this purpose, and its Merkle root is compared against the ledger hash stored for the genesis block.

Other changes:

• remove the initial_balance column of timing_info, it's redundant with the accounts_accessed balance
• remove the explicit index on block(id), because it's a primary key
• log the commit info on the archive process startup
• hacks to get Rosetta to compile after these changes

Tested by running a local network, verifying that the accounts appear in accounts_accessed.

Closes #10912.
Closes #10904.
Closes #10888