introduce collator selection #618

Job	Run time
Cancel Previous Runs	4s
Extra features build release for on (ubuntu-22.04)	14m 3s
Primary build release for on (ubuntu-22.04)	13m 20s
Build Runtimes (shell)	13m 46s
Build Runtimes (integritee)	12m 35s
cargo-toml-fmt	7s
Set up Config	1s
license-check	45s
Rust check check --features runtime-benchmarks (x86_64-unknown-linux-gnu)	9m 27s
create_artifacts (integritee, rococo)	10s
create_artifacts (integritee, westend)	6s
create_artifacts (integritee, kusama)	12s
create_artifacts (integritee, polkadot)	13s
create_artifacts (integritee, moonbase)	13s
create_artifacts (integritee, paseo)	11s
create_artifacts (shell, kusama-lease2)	7s
Draft Release	0s
Publish Runtimes	0s
	1h 5m 20s

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