GraphRAG: add new feature and bugfix (#2373)

Co-authored-by: 秉翟 <lyusonglin.lsl@antgroup.com>

packages/dbgpt-app/src/dbgpt_app/config.py

@@ -50,26 +50,6 @@ class SystemParameters:
     )
 
 
-@dataclass
-class StorageVectorConfig(BaseParameters):
-    type: str = field(
-        default="Chroma",
-        metadata={
-            "help": _("default vector type"),
-        },
-    )
-
-
-@dataclass
-class StorageGraphConfig(BaseParameters):
-    type: str = field(
-        default="TuGraph",
-        metadata={
-            "help": _("default graph type"),
-        },
-    )
-
-
 @dataclass
 class StorageConfig(BaseParameters):
     vector: VectorStoreConfig = field(