Return tool calls properly in azureChat

Make `azureChat` handle tool calls returned the same way we do in `openAIChat`.

Author: ccreutzi

+llms/+internal/callAzureChatAPI.m

@@ -73,8 +73,20 @@
  if isempty(nvp.StreamFun)
  message = response.Body.Data.choices(1).message;
  else
- message = struct("role", "assistant", ...
- "content", streamedText);
+ pat = '{"' + wildcardPattern + '":';
+ if contains(streamedText,pat)
+ s = jsondecode(streamedText);
+ if contains(s.function.arguments,pat)
+ prompt = jsondecode(s.function.arguments);
+ s.function.arguments = prompt;
+ end
+ message = struct("role", "assistant", ...
+ "content",[], ...
+ "tool_calls",jsondecode(streamedText));
+ else
+ message = struct("role", "assistant", ...
+ "content", streamedText);
+ end
  end
  if isfield(message, "tool_choice")
  text = "";

tests/tazureChat.m

@@ -172,10 +172,6 @@ function deploymentNotFound(testCase)
  end
 
  % open TODOs for azureChat
- function generateWithToolsAndStreamFunc(testCase)
- testCase.assumeFail("need to make azureChat return tool_call in the same way as openAIChat");
- end
-
  function warningJSONResponseFormat(testCase)
  testCase.assumeFail("TODO for azureChat");
  end