Add dumpStatsAndColumnMeta call to LoadingStore

Moved the dumpStatsAndColumnMeta execution from CSVLoaderNewSearch to LoadingStore for better encapsulation and responsibility alignment. This ensures metadata and statistics dumping is consistently handled within the store's lifecycle.

etl/src/main/java/edu/harvard/hms/dbmi/avillach/hpds/etl/phenotype/CSVLoaderNewSearch.java

@@ -41,7 +41,6 @@ public static void main(String[] args) throws IOException {
         store.allObservationsStore = new RandomAccessFile(HPDS_DIRECTORY + "allObservationsStore.javabin", "rw");
         initialLoad();
         store.saveStore(HPDS_DIRECTORY);
-        store.dumpStatsAndColumnMeta(HPDS_DIRECTORY);
     }
 
     private static void initialLoad() throws IOException {

etl/src/main/java/edu/harvard/hms/dbmi/avillach/hpds/etl/phenotype/LoadingStore.java

@@ -124,6 +124,7 @@ public void saveStore(String hpdsDirectory) throws IOException {
 		metaOut.close();
 		System.out.println("Closing Store");
 		allObservationsStore.close();
+		dumpStatsAndColumnMeta(hpdsDirectory);
 	}
 
 	public void dumpStats() {