* feat(core): update connector db schema
* feat(core): eliminate code redundancy for UTs
* feat(core): delete insertConnector on conflict logic and fix UTs
* feat(core): fix UI according to new connector type implementation
* feat(core): removed unused getConnectorByTargetAndPlatform methods
* feat(core): deprecate the function that updateConnector by giving target and platform
* feat(core): keep SSOT on combination of connector and corresponding metadata
* feat(core): rename index name in db
* feat(core): wrap google connector
* feat(core): connectors package.json private should be FALSE
* feat(core): fix dependency and remove query-string.stringify()
