* feat(core,schema,connectors): remove target,platform form connector schema and add id to metadata
* feat(schema,ui,console): unwrap ConnectorMetadata in ConnectorDTO
* feat(schema,ui,console): connector id use dashline instead of underscore
* feat(connector-alipay*): fix typos
* feat(connector-alipay*): remove unnecessary type declaration
* 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(connector): connector queries and APIs
* chore(connectors): remove type from DB schema design and fix code accordingly
* chore(connectors): put connector as ConnectorInstance's property
* chore(connector): put connector as optional property of ConnectorInstance
* chore: add boolean type for postgres
* chore: remove bool
* feat: connector DB
* fix: remove identifier
* chore: genenrate
* chore: remove data
* chore: todo
* chore: test TODO