[Feature] Add support for weaviate vector db (#782)

embedchain/config/vectordb/weaviate.py

@@ -0,0 +1,16 @@
+from typing import Dict, Optional
+
+from embedchain.config.vectordb.base import BaseVectorDbConfig
+from embedchain.helper.json_serializable import register_deserializable
+
+
+@register_deserializable
+class WeaviateDBConfig(BaseVectorDbConfig):
+    def __init__(
+        self,
+        collection_name: Optional[str] = None,
+        dir: Optional[str] = None,
+        **extra_params: Dict[str, any],
+    ):
+        self.extra_params = extra_params
+        super().__init__(collection_name=collection_name, dir=dir)