* Add runtime methods to simply get status and slot
* Add helper function to get slot confirmation_count from BlockCommitmentCache
* Return cluster confirmations in getSignatureStatus
* Remove use of invalid get_signature_confirmation_status
* Remove unused methods
* Update pubsub to use cluster confirmations
* Fix test_check_signature_subscribe failure
* Refactor confirmations to read commitment cache only once
* Review comments
* Use bank, root from BlockCommitmentCache
* Update docs
* Add metric for block-commitment aggregations
Co-authored-by: Justin Starry <justin@solana.com>
* SDK: Split new `FeeRateGovernor` out of `FeeCalculator`
Leaving `FeeCalculator` to *only* calculate transaction fees
* Replace `FeeCalculator` with `FeeRateGovernor` as appropriate
* Expose recent `FeeRateGovernor` to clients
* Move `burn()` back into `FeeCalculator`
Appease BPF tests
* Revert "Move `burn()` back into `FeeCalculator`"
This reverts commit f3035624307196722b62ff8b74c12cfcc13b1941.
* Adjust BPF `Fee` sysvar test to reflect removal of `burn()` from `FeeCalculator`
* Make `FeeRateGovernor`'s `lamports_per_signature` private
* rebase artifacts
* fmt
* Drop 'Recent'
* Drop _with_commitment variant
* Use a more portable integer for `target_signatures_per_slot`
* Add docs for `getReeRateCalculator` JSON RPC method
* Don't return `lamports_per_signature` in `getFeeRateGovernor` JSONRPC reply