Optimize gsfa: store transactions per account relation for most recent 1000 transactions

[grooviegermanikus]

Add redundant table (next to accounts_map_transaction) which stores the most recent 1000 transactions per account.

Algorithm:

1. take the transaction ids from current accounts_map_transaction_latest
2. use the accounts and transactions from current block
3. merge the two transaction id arrays (per acc_id):
   array_dedup_append('{8,3,2,1}', '{5,3}', 4) -> {2,1,5,3}
4. update/insert into accounts_map_transaction_latest table

SELECT
	array_dedup_append('{8,3,2,1}', '{5,3}', 4),-- {2,1,5,3}
	array_dedup_append('{8,3,2,1}', '{5,3}', 10000) -- {8,2,1,5,3}

[grooviegermanikus]