Add pausetimes to nightly runs

[Firobe]

This add pausetimes benchmarking on sequential programs in the nightly navajo and turing runs. It also refactors run_all_custom.sh to be a bit more readable.

Tested locally on Navajo

[Firobe]

Should we run olly latency for some benchmarks in CI, as well?

Sure! I plan to do this in a next PR in a next separate PR

[Firobe]

Added pausetimes on parallel benchmarks as well, since we want to report both

[shakthimaan]

LGTM!