Add chromadb based vector store impl and test case

test/test_vector_storage.py

@@ -0,0 +1,29 @@
+import sys
+import os
+
+dir_path = os.path.dirname(os.path.realpath(__file__))
+print(dir_path)
+
+sys.path.append("{}/../src/".format(dir_path))
+print(sys.path)
+
+from knowledge import ChromaVectorStore
+
+
+import asyncio
+import unittest
+
+
+async def test_vector():
+    storage = ChromaVectorStore("", "test")
+    await storage.insert([1, 2, 3], "test")
+    ids = await storage.query([1, 2, 3], 10)
+    print(ids)
+
+class TestVectorSTorage(unittest.TestCase):
+    def test_run(self):
+        asyncio.run(test_vector())
+
+
+if __name__ == "__main__":
+    unittest.main()