Add res_name field to WAF detection index template

- Introduce a new field 'res_name' of type 'keyword' in the WAF detection index template to enhance data categorization and querying capabilities.
- This addition aims to improve the structure and usability of the index for WAF-related data.

config/waf_detection_index_template.json

@@ -226,6 +226,9 @@
           "cluster_key": {
             "type": "keyword"
           },
+          "res_name": {
+            "type": "keyword"
+          },
           "attack_time": {
             "coerce": true,
             "index": true,