[CI] add zombienet setup and run most integration tests from the encointer-node #549

Job	Run time
cargo-toml-fmt	13s
Primary build release for on (ubuntu-22.04)	5m 52s
integration-test (bootstrap_demo_community.py --signer //Alice -w collective --batch-size 7 --wai...	11m 7s
create_artifacts (encointer, rococo)	8s
integration-test (bootstrap_demo_community.py --signer //Alice -w collective --batch-size 7 --wai...	10m 31s
integration-test (bootstrap_demo_community.py --signer //Alice -w collective --batch-size 7 --wai...	15m 48s
create_artifacts (encointer, westend)	19s
integration-test (bootstrap_demo_community.py --signer //Alice -w collective --batch-size 7 --wai...	12m 26s
create_artifacts (encointer, kusama)	8s
integration-test (bot-community-test -f http://host.docker.internal:5000/api -w collective --batc...	3m 12s
Draft Release	0s
	59m 44s

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