feat: add Modelfile for task 4

Modelfile

@@ -0,0 +1,14 @@
+FROM ./model-f16.gguf
+
+    TEMPLATE '''{{ if .System }}<|im_start|>system
+    {{ .System }}<|im_end|>
+    {{ end }}{{ if .Prompt }}<|im_start|>user
+    {{ .Prompt }}<|im_end|>
+    <|im_start|>assistant
+    '''
+
+    PARAMETER stop "<|im_start|>"
+    PARAMETER stop "<|im_end|>"
+    PARAMETER temperature 0.7
+    SYSTEM '''You are a helpful assistant.'''
+