Update SDK->sdk, and add create_dataset (#1047)

### What problem does this PR solve?

Add create_dataset method, test for it, and update SDK->sdk.

### Type of change

- [x] New Feature (non-breaking change which adds functionality)

Signed-off-by: cecilia-uu <konghui1996@163.com>

sdk/python/test/test_basic.py

@@ -0,0 +1,12 @@
+from test_sdkbase import TestSdk
+import ragflow
+from ragflow.ragflow import RAGFLow
+import pytest
+
+
+class TestCase(TestSdk):
+    def test_version(self):
+        print(ragflow.__version__)
+
+    def test_create_dataset(self):
+        assert ragflow.ragflow.RAGFLow('123', 'url').create_dataset('abc') == 'abc'