CloudMigration: Provide a stats rollup in the GetSnapshot response (#90252)

* order session list descending

* add snapshot status method to store

* query stats while retrieving snapshot

* return stats in dto

* swagger

* fix tests

* commit results of bingo get

* fix swagger

* minor improvement

* fix typo

* forgot a file

pkg/services/cloudmigration/api/api.go

@@ -442,6 +442,17 @@ func (cma *CloudMigrationAPI) GetSnapshot(c *contextmodel.ReqContext) response.R
 		}
 	}
 
+	dtoStats := SnapshotResourceStats{
+		Types:    make(map[MigrateDataType]int, len(snapshot.StatsRollup.CountsByStatus)),
+		Statuses: make(map[ItemStatus]int, len(snapshot.StatsRollup.CountsByType)),
+	}
+	for s, c := range snapshot.StatsRollup.CountsByStatus {
+		dtoStats.Statuses[ItemStatus(s)] = c
+	}
+	for s, c := range snapshot.StatsRollup.CountsByType {
+		dtoStats.Types[MigrateDataType(s)] = c
+	}
+
 	respDto := GetSnapshotResponseDTO{
 		SnapshotDTO: SnapshotDTO{
 			SnapshotUID: snapshot.UID,
@@ -450,7 +461,8 @@ func (cma *CloudMigrationAPI) GetSnapshot(c *contextmodel.ReqContext) response.R
 			Created:     snapshot.Created,
 			Finished:    snapshot.Finished,
 		},
-		Results: dtoResults,
+		Results:     dtoResults,
+		StatsRollup: dtoStats,
 	}
 
 	return response.JSON(http.StatusOK, respDto)