community[patch]: Add function call support in Tongyi chat model. (#20119)

- [ ] **PR message**: 
- **Description:** This pr adds function calling support in Tongyi chat
model.
    - **Issue:** None
    - **Dependencies:** None
    - **Twitter handle:** None

Co-authored-by: Bagatur <22008038+baskaryan@users.noreply.github.com>

libs/community/langchain_community/chat_models/tongyi.py

@@ -33,6 +33,10 @@ from langchain_core.messages import (
     SystemMessage,
     SystemMessageChunk,
 )
+from langchain_core.output_parsers.openai_tools import (
+    make_invalid_tool_call,
+    parse_tool_call,
+)
 from langchain_core.outputs import (
     ChatGeneration,
     ChatGenerationChunk,
@@ -71,8 +75,28 @@ def convert_dict_to_message(
             else HumanMessage(content=content)
         )
     elif role == "assistant":
+        tool_calls = []
+        invalid_tool_calls = []
+        if "tool_calls" in _dict:
+            additional_kwargs = {"tool_calls": _dict["tool_calls"]}
+            for raw_tool_call in _dict["tool_calls"]:
+                try:
+                    tool_calls.append(parse_tool_call(raw_tool_call, return_id=True))
+                except Exception as e:
+                    invalid_tool_calls.append(
+                        make_invalid_tool_call(raw_tool_call, str(e))
+                    )
+        else:
+            additional_kwargs = {}
         return (
-            AIMessageChunk(content=content) if is_chunk else AIMessage(content=content)
+            AIMessageChunk(content=content)
+            if is_chunk
+            else AIMessage(
+                content=content,
+                additional_kwargs=additional_kwargs,
+                tool_calls=tool_calls,
+                invalid_tool_calls=invalid_tool_calls,
+            )
         )
     elif role == "system":
         return (