add: 添加ollama调用AI chat逻辑

maubot_llmplus/llm/thrid_platform.py

@@ -0,0 +1,39 @@
+from collections import deque
+from typing import List
+
+from maubot import Plugin
+from mautrix.types import MessageEvent
+from mautrix.util.config import BaseProxyConfig
+
+from maubot_llmplus import AiBotPlugin
+from maubot_llmplus.llm.platforms import Platform, ChatCompletion
+
+
+class OpenAi(Platform):
+
+    def __init__(self, config: BaseProxyConfig) -> None:
+        super().__init__(config)
+
+    async def create_chat_completion(self, evt: MessageEvent) -> ChatCompletion:
+        # 获取系统提示词
+        # 获取额外的其他角色的提示词： role: user role: system
+
+        pass
+
+    def get_type(self) -> str:
+        return "openai"
+
+
+class Anthropic(Platform):
+
+    def __init__(self, config: BaseProxyConfig) -> None:
+        super().__init__(config)
+
+    async def create_chat_completion(self, evt: MessageEvent) -> ChatCompletion:
+        # 获取系统提示词
+        # 获取额外的其他角色的提示词： role: user role: system
+
+        pass
+
+    def get_type(self) -> str:
+        return "anthropic"