server: add tool parsing support for nemotron-mini (#6849)

server/testdata/tools/nemotron.gotmpl

@@ -0,0 +1,33 @@
+{{- if (or .Tools .System) }}<extra_id_0>System
+{{ if .System }}{{ .System }}
+
+
+{{ end }}
+{{- if .Tools }}
+{{- range .Tools }}<tool> {{ . }} </tool>{{ end }}
+
+
+{{ end }}
+{{- end }}
+{{- range $i, $m := .Messages }}
+{{- $last := eq (len (slice $.Messages $i)) 1 -}}
+{{- if eq .Role "user" }}<extra_id_1>User
+{{ .Content }}
+{{- if $last }}
+<extra_id_1>Assistant
+{{- end }}
+{{ else if eq .Role "tool" }}<extra_id_1>Tool
+{{ .Content }}
+{{- if $last }}
+<extra_id_1>Assistant
+{{- end }}
+{{ else if eq .Role "assistant" }}<extra_id_1>Assistant
+{{- if .ToolCalls }}
+{{ range .ToolCalls }}<toolcall> {"name": "{{ .Function.Name }}", "arguments": {{ .Function.Arguments }}} </toolcall> {{ end }}
+{{ else }}
+{{ .Content }}
+{{- if not $last }}
+{{ end }}
+{{- end }}
+{{- end }}
+{{- end }}

server/testdata/tools/nemotron.out

@@ -0,0 +1,18 @@
+<extra_id_0>System
+You are a knowledgable assistant. You can answer questions and perform tasks.
+
+
+<tool> {"type":"function","function":{"name":"get_current_weather","description":"Get the current weather","parameters":{"type":"object","required":["location","format"],"properties":{"format":{"type":"string","description":"The temperature unit to use. Infer this from the users location.","enum":["celsius","fahrenheit"]},"location":{"type":"string","description":"The city and state, e.g. San Francisco, CA"}}}}} </tool>
+
+
+<extra_id_1>User
+What's the weather like today in Paris?
+<extra_id_1>Assistant
+<toolcall> {"name": "get_current_weather", "arguments": {"format":"celsius","location":"Paris, France"}} </toolcall> 
+<extra_id_1>Tool
+22
+<extra_id_1>Assistant
+The current temperature in Paris, France is 22 degrees Celsius.
+<extra_id_1>User
+What's the weather like today in San Francisco and Toronto?
+<extra_id_1>Assistant