Add tunnel support ,and implment TelegramTunnel. Now we can use telegram bot connect to installed agent/workflow.

src/aios_kernel/tunnel.py

@@ -0,0 +1,63 @@
+from abc import ABC, abstractmethod
+import logging
+from typing import Coroutine
+from .agent_message import AgentMsg
+from .bus import AIBus
+
+logger = logging.getLogger(__name__)
+
+class AgentTunnel(ABC):
+    _all_loader = {}
+    _all_tunnels = {}
+    @classmethod
+    def register_loader(cls,tunnel_type:str,loader:Coroutine) -> None:
+        cls._all_loader[tunnel_type] = loader
+
+    @classmethod
+    async def load_all_tunnels_from_config(cls,config:dict) -> None:
+        for tunnel_config in config:
+            loader = cls._all_loader.get(tunnel_config["type"])
+            if loader is not None:
+                tunnel = await loader(tunnel_config)
+                if tunnel is not None:
+                    cls._all_tunnels[tunnel.tunnel_id] = tunnel
+                    tunnel.connect_to(AIBus.get_default_bus(),tunnel.target_id)
+                    await tunnel.start()
+                else:
+                    logger.error(f"load tunnel {tunnel_config['tunnel_id']} failed") 
+            else:
+                logger.error(f"load tunnel {tunnel_config['type']} failed,loader not found")
+
+    def __init__(self) -> None:
+        super().__init__()
+        self.tunnel_id = None
+        self.target_id = None
+        self.target_type = None
+        self.ai_bus = None
+        self.is_connected = False
+
+    def connect_to(self, ai_bus:AIBus,target_id: str) -> None:
+        """
+        Connect to the agent with the given id
+        """
+        if self.is_connected:
+            logger.warning(f"tunnel {self.tunnel_id} is already connected to {self.target_id}")
+            return
+        self.target_id = target_id
+        self.target_type = "agent"
+        self.ai_bus = ai_bus
+        self.is_connected = True
+
+        
+
+    @abstractmethod
+    async def start(self) -> bool:
+        pass
+
+    @abstractmethod
+    async def close(self) -> None:
+        pass
+
+    @abstractmethod
+    async def _process_message(self, msg: AgentMsg) -> None:
+        pass