Implement l2 transactions preprocessing

[torztomasz]

Resolves L2B-1752

[linear]

L2B-1752 Update preprocessors for l2_transactions

L2 Statistics

For statistics in state update view:

• to the preprocessed_state_details table add columns
  • l2_transaction_count
  • l2_replaced_transaction_count
  • l2_multitransaction_count

  async preprocessFeederGatewayStatistics(stateUpdate) {
    const lastPreprocessedFeedarGatewayStateUpdateId = 
      "SELECT MAX(state_update_id) FROM preprocessed_state_details WHERE l2_transaction_count IS NOT NULL"

    const lastDownloadedFeedarGatewayStateUpdateId =
      "SELECT MAX(state_update_id) FROM l2_transactions WHERE state_update_id IS NOT NULL"

    for (stateUpdateId = lastPreprocessedFeedarGatewayStateUpdateId;
      stateUpdateId <= min(lastDownloadedFeedarGatewayStateUpdateId, stateUpdate.id);
      i++) {

        const l2TxCount, l2ReplacedTxCount, l2MultiTxCount = 
          L2TransactionRepository.getByStateUpdateId(stateUpdate.id, trx)

        await this.preprocessedStateDetailsRepository.update(
          l2TxCount, ..
        )
      }
    }
  }

For statistics in user view:

• to preprocessed_user_statistics add columns as above
• implement similarily as above

For home page: same but for preproceessed_state_update

[adamiak]

The order of columns in the index is important. Since we often select by state_update_id only, it should come first, because if it comes second, this index won't be used (unless something changed since I learned about pg indexes :)).

BTW, we still need to spend some time afterwards and make sure we're not missing any indexes, and the ones we have are utilized and don't have too much data.