chore(model gallery): add basic function template for gemma

Signed-off-by: Ettore Di Giacinto <mudler@localai.io>

gallery/gemma.yaml

@@ -7,14 +7,32 @@ config_file: |
   template:
     chat_message: |-
       <start_of_turn>{{if eq .RoleName "assistant" }}model{{else}}{{ .RoleName }}{{end}}
+      {{ if .FunctionCall -}}
+      Function call:
+      {{ else if eq .RoleName "tool" -}}
+      Function response:
+      {{ end -}}
       {{ if .Content -}}
       {{.Content -}}
+      {{ end -}}
+      {{ if .FunctionCall -}}
+      {{toJson .FunctionCall}}
       {{ end -}}<end_of_turn>
     chat: |
       {{.Input }}
       <start_of_turn>model
     completion: |
       {{.Input}}
+    function: |
+      <start_of_turn>system
+      You are a function calling AI model. You are provided with functions to execute. You may call one or more functions to assist with the user query. Don't make assumptions about what values to plug into functions. Here are the available tools:
+      {{range .Functions}}
+      {'type': 'function', 'function': {'name': '{{.Name}}', 'description': '{{.Description}}', 'parameters': {{toJson .Parameters}} }}
+      {{end}}
+      For each function call return a json object with function name and arguments
+      <end_of_turn>
+      {{.Input -}}
+      <start_of_turn>model
   stopwords:
   - '<|im_end|>'
   - '<end_of_turn>'