add convenience DEX #555

Job	Run time
Set up Config	1s
Extra features build release for on (ubuntu-22.04)	23m 3s
license-check	51s
Primary build release for on (ubuntu-22.04)	20m 47s
Cancel Previous Runs	5s
Build Runtimes (shell)	14m 3s
cargo-toml-fmt	13s
Build Runtimes (integritee)	13m 10s
Rust check fmt --all -- --check (x86_64-unknown-linux-gnu)	58s
Rust check check --features runtime-benchmarks (x86_64-unknown-linux-gnu)	10m 18s
create_artifacts (integritee, rococo)	13s
create_artifacts (integritee, westend)	8s
create_artifacts (integritee, kusama)	10s
create_artifacts (integritee, polkadot)	13s
create_artifacts (integritee, moonbase)	15s
create_artifacts (shell, kusama-lease2)	13s
Draft Release	0s
Publish Runtimes	0s
	1h 24m 41s

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