Added status badges to README.md (#191) #104

Job	Run time
pre-integration-checks (==3.3.0.0) / Check libraries	37s
pre-integration-checks (==3.3.0.0) / Lint	14s
pre-integration-checks (==3.3.0.0) / Unit tests	3m 45s
integration (3.1/stable, ==3.3.0.0) / Build charms / Get workflow version / Get workflow version	7s
integration (3.1/stable, ==3.3.0.0) / Build charms / Collect charms	11s
integration (3.1/stable, ==3.3.0.0) / Build charms / Build opensearch charm \| 22.04	1m 43s
integration (3.1/stable, ==3.3.0.0) / Build charms / Build application charm \| 22.04	1m 24s
integration (3.1/stable, ==3.3.0.0) / backup-microceph-integration-test	19m 17s
integration (3.1/stable, ==3.3.0.0) / charm-integration	11m 54s
integration (3.1/stable, ==3.3.0.0) / tls-integration	12m 4s
integration (3.1/stable, ==3.3.0.0) / client-integration	32m 1s
integration (3.1/stable, ==3.3.0.0) / h-scaling-integration	52m 28s
integration (3.1/stable, ==3.3.0.0) / ha-base-integration	33m 59s
integration (3.1/stable, ==3.3.0.0) / ha-networking-integration	55m 12s
integration (3.1/stable, ==3.3.0.0) / ha-multi-clusters-integration	16m 19s
integration (3.1/stable, ==3.3.0.0) / large-deployments-integration	23m 4s
integration (3.1/stable, ==3.3.0.0) / plugins-integration	27m 27s
Release to CharmHub	0s
	4h 51m 46s

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