Add migration sequencer to RuntimeContext

Author: JCZuurmond

src/databricks/labs/ucx/contexts/workflow_task.py

@@ -18,6 +18,7 @@
 from databricks.labs.ucx.assessment.init_scripts import GlobalInitScriptCrawler
 from databricks.labs.ucx.assessment.jobs import JobOwnership, JobInfo, JobsCrawler, SubmitRunsCrawler
 from databricks.labs.ucx.assessment.pipelines import PipelinesCrawler, PipelineInfo, PipelineOwnership
+from databricks.labs.ucx.assessment.sequencing import MigrationSequencer
 from databricks.labs.ucx.config import WorkspaceConfig
 from databricks.labs.ucx.contexts.application import GlobalContext
 from databricks.labs.ucx.hive_metastore import TablesInMounts, TablesCrawler
@@ -253,3 +254,7 @@ def udfs_progress(self) -> ProgressEncoder[Udf]:
             self.workspace_id,
             self.config.ucx_catalog,
         )
+
+    @cached_property
+    def migration_sequencer(self) -> MigrationSequencer:
+        return MigrationSequencer(self.workspace_client, self.administrator_locator)