Refactor SOM visualizations and update results paths

- Changed the topology parameter from rectangular to hexagonal in energy efficiency and wine notebooks to enhance model performance.
- Updated save paths for visualizations in all notebooks to include the topology type, ensuring organized output.
- Improved training output logs for Boston housing, energy efficiency, iris, and wine datasets, reflecting more accurate training times and metrics.
- Deleted outdated result images for Boston and energy datasets, and added new hexagonal topology images for better clarity in results.
- Introduced new classification and distance maps for iris and wine datasets under hexagonal topology, enhancing visualization capabilities.

Author: LouisTier

notebooks/boston_housing.ipynb

@@ -442,7 +442,7 @@
      "name": "stderr",
      "output_type": "stream",
      "text": [
-      "Training SOM: 100%|██████████| 100/100 [00:09<00:00, 10.95epoch/s]\n"
+      "Training SOM: 100%|██████████| 100/100 [00:16<00:00,  6.22epoch/s]\n"
      ]
     }
    ],
@@ -459,7 +459,7 @@
    "outputs": [],
    "source": [
     "visualizer = SOMVisualizer(som=som, config=None)\n",
-    "save_path = \"results/iris\" # Set to None if you want a direct plot"
+    "save_path = f\"results/iris/{som.topology}\" # Set to None if you want a direct plot"
    ]
   },
   {