Add initial version of ROBERTA classifier, add ability for multi pi charts

supporting/RAGAS_Service/prepare_data.py

@@ -0,0 +1,22 @@
+import json
+import csv
+
+input_file = "../../data/input.jsonl"
+output_file = "../../data/classify.csv"
+
+with open(input_file, "r", encoding="utf-8") as infile, \
+     open(output_file, "w", newline="", encoding="utf-8") as outfile:
+
+    writer = csv.writer(outfile)
+    writer.writerow(["event", "extra_info"])  # header
+
+    for line in infile:
+        data = json.loads(line)
+
+        events = data.get("events", [])
+        for event in events:
+            event_text = event.get("event", "")
+            extra_info = event.get("extra_info", "").strip()
+            writer.writerow([event_text, extra_info])
+
+print(f"Saved CSV to {output_file}")