ci: Migrate Litmus and CalDAVTester from drone to GitHub #5519

Job	Run time
changes	7s
integration-sqlite (capabilities_features, 8.2, main)	52s
integration-sqlite (collaboration_features, 8.2, main)	7m 13s
integration-sqlite (comments_features, 8.2, main)	1m 56s
integration-sqlite (dav_features, 8.2, main)	9m 30s
integration-sqlite (features, 8.2, main)	5m 51s
integration-sqlite (federation_features, 8.2, main)	7m 55s
integration-sqlite (--tags ~@large files_features, 8.2, main)	6m 48s
integration-sqlite (filesdrop_features, 8.2, main)	1m 5s
integration-sqlite (openldap_features, 8.2, main)	1m 7s
integration-sqlite (openldap_numerical_features, 8.2, main)	5m 47s
integration-sqlite (ldap_features, 8.2, main)	6m 2s
integration-sqlite (remoteapi_features, 8.2, main)	56s
integration-sqlite (setup_features, 8.2, main)	46s
integration-sqlite (sharees_features, 8.2, main)	2m 25s
integration-sqlite (sharing_features, 8.2, main)	10m 20s
integration-sqlite (videoverification_features, 8.2, main)	3m 16s
integration-sqlite-summary	4s
	1h 12m 0s

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