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* feat: draft changes for on-prem unified migration * feat: further draft changes for on-prem unified migration * fix: remove some tbis * refactor: rename * fix: another approach * fix: background service related issues * fix: address comments * fix: make gen-go * fix: background service related issues * feat: refactor dual writer and legacy migrator * fix: minor issues * feat: working version in oss * fix: wire * fix: revert test data override * fix: enterprise related issues * chore: add todo * fix: revert dual writer method * fix: lint * chore: logger format * fix: reduce log level * fix: log change * fix: disable * fix: address comments * fix: return error on dual writer service * fix: merge conflict --------- Co-authored-by: Rafael Paulovic <rafael.paulovic@grafana.com>