feat: add supports for open router (#1422)

pkg/provider/modelmgr/requesters/openrouterchatcmpl.yaml

@@ -0,0 +1,28 @@
+apiVersion: v1
+kind: LLMAPIRequester
+metadata:
+  name: openrouter-chat-completions
+  label:
+    en_US: OpenRouter
+    zh_Hans: OpenRouter
+  icon: openrouter.svg
+spec:
+  config:
+    - name: base_url
+      label:
+        en_US: Base URL
+        zh_Hans: 基础 URL
+      type: string
+      required: true
+      default: "https://openrouter.ai/api/v1"
+    - name: timeout
+      label:
+        en_US: Timeout
+        zh_Hans: 超时时间
+      type: integer
+      required: true
+      default: 120
+execution:
+  python:
+    path: ./openrouterchatcmpl.py
+    attr: OpenRouterChatCompletions