[Frontend] Add missing chat templates for various MLLMs (#17758)

Signed-off-by: DarkLight1337 <tlleungac@connect.ust.hk>

examples/template_qwen_vl_chat.jinja

@@ -0,0 +1,10 @@
+{%- for message in messages -%}
+    {{- '<|im_start|>' + message['role'] + '\n' + message['content'] -}}
+    {%- if (loop.last and add_generation_prompt) or not loop.last -%}
+        {{- '<|im_end|>' + '\n' -}}
+    {%- endif -%}
+{%- endfor -%}
+
+{%- if add_generation_prompt and messages[-1]['role'] != 'assistant' -%}
+    {{- '<|im_start|>assistant\n' -}}
+{%- endif -%}