[b/352468287] Move all existing SQLs to a 'cdb' subdirectory (#476)

Create a new directory for multi-tenant DB systems. Since all existing SQLs are designed for this case, move them to the new directory.

dumper/app/src/main/java/com/google/edwmigration/dumper/application/dumper/connector/oracle/OracleStatsQuery.java

@@ -68,7 +68,7 @@ static OracleStatsQuery createStatspack(String name, Duration queriedDuration)
   private static OracleStatsQuery create(
       boolean isRequired, Duration queriedDuration, String name, StatsSource statsSource)
       throws IOException {
-    String path = String.format("oracle-stats/%s/%s.sql", statsSource.value, name);
+    String path = String.format("oracle-stats/cdb/%s/%s.sql", statsSource.value, name);
     return new AutoValue_OracleStatsQuery(
         isRequired, queriedDuration, name, loadFile(path), statsSource);
   }