Feat/302 ai (#1558)

* feat: add 302.AI requester

* doc: add 302.AI to README

pkg/provider/modelmgr/requesters/302aichatcmpl.yaml

@@ -0,0 +1,28 @@
+apiVersion: v1
+kind: LLMAPIRequester
+metadata:
+  name: 302-ai-chat-completions
+  label:
+    en_US: 302 AI
+    zh_Hans: 302 AI
+  icon: 302ai.png
+spec:
+  config:
+    - name: base_url
+      label:
+        en_US: Base URL
+        zh_Hans: 基础 URL
+      type: string
+      required: true
+      default: "https://api.302.ai/v1"
+    - name: timeout
+      label:
+        en_US: Timeout
+        zh_Hans: 超时时间
+      type: integer
+      required: true
+      default: 120
+execution:
+  python:
+    path: ./302aichatcmpl.py
+    attr: AI302ChatCompletions