[ADD] dataset + anotation + split info

split_info.txt

@@ -0,0 +1,43 @@
+Dataset Split Information
+=======================
+
+Total samples: 868
+Random seed: 42
+Split ratios: train=0.75, val=0.15, test=0.10
+Stratified sampling: True
+
+Class distribution:
+==================
+Class imbalance ratio: 1803.60
+Most frequent class: region (9018 instances)
+Least frequent class: captcha (5 instances)
+
+Class distribution across splits:
+===============================
+Class                Total    Train    Val      Test     Train%   Val%     Test%  - id 
+region               9018     6533     1381     1104     72.44    15.31    12.24  - 6 
+generic-button       5526     4140     800      586      74.92    14.48    10.60  - 8 
+contentinfo          3816     2768     617      431      72.54    16.17    11.29  - 7 
+navigation           3754     2749     578      427      73.23    15.40    11.37  - 4 
+image                3046     2122     536      388      69.67    17.60    12.74  - 9 
+complementary        960      719      140      101      74.90    14.58    10.52  - 3 
+main                 843      615      128      100      72.95    15.18    11.86  - 1 
+banner               702      521      105      76       74.22    14.96    10.83  - 2 
+search               551      402      85       64       72.96    15.43    11.62  - 5 
+popover              250      188      34       28       75.20    13.60    11.20  - 14 
+form                 209      152      29       28       72.73    13.88    13.40  - 10   
+close-button         193      143      29       21       74.09    15.03    10.88  - 16 
+accept-button        81       51       15       15       62.96    18.52    18.52  - 12 
+cookie-dialog        59       42       8        9        71.19    13.56    15.25  - 13 
+preferences-button   58       38       9        11       65.52    15.52    18.97  - 11
+reject-button        20       13       3        4        65.00    15.00    20.00  - 15 
+captcha              5        2        1        2        40.00    20.00    40.00  - 17 
+
+Output directories:
+=================
+Train images: coco_data/train/images
+Validation images: coco_data/val/images
+Test images: coco_data/test/images
+Train annotations: coco_data/train_annotations.json
+Validation annotations: coco_data/val_annotations.json
+Test annotations: coco_data/test_annotations.json