파일 count 기능 추가

src/main/java/com/kamco/cd/training/train/service/DataSetCountersService.java

@@ -54,6 +54,20 @@ public class DataSetCountersService {
       return (int)
           stream.filter(Files::isRegularFile).filter(p -> p.toString().endsWith(".tif")).count();
     }
+
+    /*
+    대소문자 및 geojson 필요시
+    * try (var stream = Files.walk(dir)) {
+        return (int)
+            stream
+                .filter(Files::isRegularFile)
+                .filter(p -> {
+                    String name = p.getFileName().toString().toLowerCase();
+                    return name.endsWith(".tif") || name.endsWith(".geojson");
+                })
+                .count();
+    }
+    * */
   }
 
   public DatasetCounters countTmpAfterBuild(Path path) throws IOException {