Add chat template to UI inputs

Author: sd109

chart/azimuth-ui.schema.yaml

@@ -5,6 +5,8 @@ controls:
   /huggingface/token:
     type: TextControl
     secret: true
+  /huggingface/chat_template:
+    type: TextControl
   /ui/appSettings/hf_model_instruction:
     type: TextControl
   /ui/appSettings/page_title:

chart/values.schema.json

@@ -10,6 +10,11 @@
                     "title": "Model",
                     "description": "The [HuggingFace model](https://huggingface.co/models) to deploy (see [here](https://github.com/stackhpc/azimuth-llm?tab=readme-ov-file#tested-models) for a list of tested models)."
                 },
+                "chat_template": {
+                    "type": "string",
+                    "title": "Chat Template",
+                    "description": "An optional chat template override for the model (see [here](https://huggingface.co/blog/chat-templates) for more information)."
+                },
                 "token": {
                     "type": "string",
                     "title": "Access Token",