enh: channel file upload

backend/open_webui/models/files.py

@@ -27,6 +27,8 @@ class File(Base):
     data = Column(JSON, nullable=True)
     meta = Column(JSON, nullable=True)
 
+    access_control = Column(JSON, nullable=True)
+
     created_at = Column(BigInteger)
     updated_at = Column(BigInteger)
 
@@ -44,6 +46,8 @@ class FileModel(BaseModel):
     data: Optional[dict] = None
     meta: Optional[dict] = None
 
+    access_control: Optional[dict] = None
+
     created_at: Optional[int]  # timestamp in epoch
     updated_at: Optional[int]  # timestamp in epoch
 
@@ -90,6 +94,7 @@ class FileForm(BaseModel):
     path: str
     data: dict = {}
     meta: dict = {}
+    access_control: Optional[dict] = None
 
 
 class FilesTable: