TEST: Added test cases for Create Dataset HTTP API (#5724)

### What problem does this PR solve?

1. add test cases
2. integrate workflows/tests.yml into CI pipeline

### Type of change

- [x] add testcases

sdk/python/test/conftest.py

@@ -18,6 +18,8 @@ import os
 import pytest
 import requests
 
+from libs.auth import RAGFlowHttpApiAuth
+
 HOST_ADDRESS = os.getenv('HOST_ADDRESS', 'http://127.0.0.1:9380')
 
 
@@ -85,3 +87,8 @@ def get_auth():
 @pytest.fixture(scope="session")
 def get_email():
     return EMAIL
+
+
+@pytest.fixture(scope="session")
+def get_http_api_auth(get_api_key_fixture):
+    return RAGFlowHttpApiAuth(get_api_key_fixture)