feat: add optuna vscode extension

Author: RuiFilipeCampos

.devcontainer/devcontainer.json

@@ -22,7 +22,11 @@
 	// "postCreateCommand": "gh auth login && ",
 
 	// Configure tool-specific properties.
-	// "customizations": {},
+	"customizations": {
+	    "vscode": {
+	      "extensions": ["Optuna.optuna-dashboard"]
+	    }
+	},
 
 	// Uncomment to connect as root instead. More info: https://aka.ms/dev-containers-non-root.
 	// "remoteUser": "root"