Set the "Event classification for payment card fraud detection" tutor…

…ial as Keras 3 compatible. (keras-team#1762)

* Create example of transactions classification using Keras & Temporian

* Address comments

* Address all comments except one.

* s/keras core/keras 3 in text

* Address comments

* Update event_classification_for_payment_card_fraud_detection.py

* Adding .md and .ipynb files

* Set the "Event classification for payment card fraud detection" tutorial as Keras 3 compatible.

* Change category from "Timeseries forecasting" to "Timeseries classification"

scripts/examples_master.py

@@ -656,6 +656,12 @@
                     "subcategory": "Timeseries classification",
                     "keras_3": True,
                 },
+                {
+                    "path": "event_classification_for_payment_card_fraud_detection",
+                    "title": "Event classification for payment card fraud detection",
+                    "subcategory": "Timeseries classification",
+                    "keras_3": True,
+                },
                 # Anomaly detection
                 {
                     "path": "timeseries_anomaly_detection",