fix: files.create() cannot create dir

common/src/main/java/com/stardust/pio/PFiles.java

@@ -56,12 +56,17 @@ public class PFiles {
     }
 
     public static boolean create(String path) {
+        File f = new File(path);
+        if (path.endsWith(File.separator)) {
+            return f.mkdir();
+        } else {
             try {
-            return new File(path).createNewFile();
+                return f.createNewFile();
             } catch (IOException e) {
                 return false;
             }
         }
+    }
 
     public static boolean createIfNotExists(String path) {
         ensureDir(path);