Feature: Bulk update ValidatorHistoryAccounts more efficiently

[buffalu]

Is your feature request related to a problem? Please describe.
Running a keeper for StakeNet isn't as efficient as it could be. There are likely too many transactions being sent on-chain.

Describe the solution you'd like
Find a better way to upload transactions by bulk writing transactions or potentially leveraging address lookup tables.

Note
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[datben]

Hey @buffalu, I can take a look at this. Regarding an address lookup table integration, I'll need to know how many validator_history_account/vote_account are currently in use and what the expected evolution of the number of those accounts is.