Implement automatic recovery of corrupted blobs during startup

[ikopylov]

Automatic recovery is not suitable for all cases, so we need a parameter in configuration file, that will turn on this feature (by default it should be turned off). We already have corrupted blob detection, that moves corrupted blob into corrupted directory. With this feature turned on, we can create a blob with the same name and copy the correct records from the moved blob. Moved blob should be preserved