Add overhead benchmark to frame-omni-bencher #4530

Job	Run time
preflight / preflight	41s
preflight / ci-versions	1m 18s
test-full-crypto-feature	3m 5s
cargo-check-benches (master)	20m 48s
cargo-check-benches (current)	20m 58s
cargo-check-each-crate (1)	18m 38s
cargo-check-each-crate (2)	19m 10s
cargo-check-each-crate (3)	7m 27s
cargo-check-each-crate (4)	16m 56s
test-frame-ui	46m 14s
cargo-check-each-crate (5)	23m 43s
cargo-check-each-crate (6)	14m 41s
cargo-check-each-crate (7)	32m 24s
test-node-metrics	8m 27s
cargo-check-all-crate-macos	10m 50s
test-frame-examples-compile-to-wasm	3m 6s
test-deterministic-wasm	6m 27s
check-tracing	2m 26s
check-metadata-hash	6m 17s
node-bench-regression-guard	15s
All test misc tests passed	1s
	4h 23m 52s

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