ensure BSFiles use blocks that are aligned to 512 Byte offsets

data-store/src/main/java/org/lucares/pdb/datastore/internal/DataStore.java

@@ -66,6 +66,7 @@ public class DataStore implements AutoCloseable {
 		listingFilePath = storageBasePath.resolve("listing.csv");
 		diskStorageFilePath = storageBasePath.resolve("data.bs");
 		diskStorage = new DiskStorage(diskStorageFilePath);
+		diskStorage.ensureAlignmentForNewBlocks(BSFile.BLOCK_SIZE);
 		initListingFileIfNotExists();
 		init(diskStorage);
 		listingFile = new RandomAccessFile(listingFilePath.toFile(), "rw");