Add devcontainer VS Code extensions

Update .devcontainer/devcontainer.json to add VS Code customizations (Jupyter and Python extensions)

Author: koderzi

.devcontainer/devcontainer.json

@@ -5,5 +5,20 @@
         "--gpus",
         "all",
         "--runtime=nvidia"
-    ]
-}
+    ],
+    "customizations": {
+        "vscode": {
+            "extensions": [
+                "ms-toolsai.jupyter",
+                "ms-toolsai.vscode-jupyter-cell-tags",
+                "ms-toolsai.jupyter-keymap",
+                "ms-toolsai.jupyter-renderers",
+                "ms-toolsai.vscode-jupyter-slideshow",
+                "ms-python.vscode-pylance",
+                "ms-python.python",
+                "ms-python.debugpy",
+                "ms-python.vscode-python-envs"
+            ]
+        }
+    }
+}