feat: implement channel runtime connectors

external-connector/external_connector/models.py

@@ -0,0 +1,24 @@
+from __future__ import annotations
+
+from typing import Any
+
+from pydantic import BaseModel, Field
+
+
+class ConnectorSessionRequest(BaseModel):
+    kind: str
+    connection_id: str = Field(alias="connectionId")
+    channel_id: str = Field(alias="channelId")
+    display_name: str = Field(alias="displayName")
+    callback_base_url: str = Field(alias="callbackBaseUrl")
+    options: dict[str, Any] = Field(default_factory=dict)
+
+
+class SendRequest(BaseModel):
+    request_id: str = Field(alias="requestId")
+    connection_id: str = Field(alias="connectionId")
+    channel_id: str = Field(alias="channelId")
+    kind: str
+    target: dict[str, Any]
+    content: str
+    metadata: dict[str, Any] = Field(default_factory=dict)