[CI] add zombienet setup and run most integration tests from the enco… #552

Job	Run time
cargo-toml-fmt	5s
Primary build release for on (ubuntu-22.04)	30m 1s
integration-test (bootstrap_demo_community.py --signer //Alice -w collective --batch-size 7 --wai...	11m 6s
create_artifacts (encointer, rococo)	8s
integration-test (bootstrap_demo_community.py --signer //Alice -w collective --batch-size 7 --wai...	6m 28s
integration-test (bootstrap_demo_community.py --signer //Alice -w collective --batch-size 7 --wai...	14m 59s
create_artifacts (encointer, westend)	12s
integration-test (bootstrap_demo_community.py --signer //Alice -w collective --batch-size 7 --wai...	6m 17s
create_artifacts (encointer, kusama)	14s
Draft Release	0s
	1h 9m 30s

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