[#684] proto: Add skipped count to evacuation status response

Signed-off-by: Dmitrii Stepanov <d.stepanov@yadro.com>

pkg/services/control/service.proto

@@ -362,7 +362,7 @@ message GetShardEvacuationStatusResponse {
             int64 seconds = 1;
         }
 
-        // Total objects to evacuate count. The value is approximate, so evacuated + failed == total is not guaranteed after completion.
+        // Total objects to evacuate count. The value is approximate, so evacuated + failed + skipped == total is not guaranteed after completion.
         uint64 total = 1;
         // Evacuated objects count.
         uint64 evacuated = 2;
@@ -379,6 +379,9 @@ message GetShardEvacuationStatusResponse {
         UnixTimestamp started_at = 7;
         // Error message if evacuation failed.
         string error_message = 8;
+
+        // Skipped objects count.
+        uint64 skipped = 9;
     }
 
     Body body = 1;