refact: rename stage to repository

dashboard/libs/repository/fs_repository.py

@@ -1,8 +1,11 @@
-from .stage import AbstractStage
 from pathlib import Path
+
 import pandas as pd
 
-class FSStage(AbstractStage):
+from .repository import AbstractRepository
+
+
+class FSRepository(AbstractRepository):
     def __init__(self, name, basepath, metadata_engine=None):
         self.name = name
 

dashboard/libs/repository/repository.py

@@ -2,7 +2,7 @@ import abc
 from .metadata import AbstractMetadataEngine
 
 
-class AbstractStage(abc.ABC):
+class AbstractRepository(abc.ABC):
     metadata_engine = AbstractMetadataEngine
 
     @abc.abstractmethod