* Cli: better estimate of epoch time elapsed/remaining (#15893)
* Add rpc_client api for getRecentPerformanceSamples
* Prep fn for variable avg slot time
* Use recent-perf-samples to more-accurately estimate epoch completed times
* Spell out average
(cherry picked from commit 3726358f51
)
# Conflicts:
# cli-output/src/cli_output.rs
* Fix conflict
Co-authored-by: Tyera Eulberg <teulberg@gmail.com>
Co-authored-by: Tyera Eulberg <tyera@solana.com>