add status processing (#6609)

ydb/core/protos/statistics.proto

@@ -117,7 +117,7 @@ message TEvAnalyzeTable {
 
 // Shard -> SA
 message TEvAnalyzeTableResponse {
-    optional NKikimrProto.TPathID PathId = 1;   
+    optional NKikimrProto.TPathID PathId = 1;
 }
 
 
@@ -145,8 +145,9 @@ message TEvStatisticsResponse {
     enum EStatus {
         STATUS_UNSPECIFIED = 0;
         STATUS_SUCCESS = 1;
-        STATUS_ABORTED = 2;
-        STATUS_ERROR = 3;
+        STATUS_PROCESSING = 2;
+        STATUS_ABORTED = 3;
+        STATUS_ERROR = 4;
     }
     optional EStatus Status = 2;
     optional fixed64 ShardTabletId = 3;