feat: add cloud storage via rclone

squashme: use the amalthea session cache

Author: olevski

components/renku_data_services/notebooks/api.spec.yaml

@@ -439,6 +439,7 @@ components:
       - registered
       type: object
     ErrorResponse:
+      type: object
       properties:
         error:
           type: object

components/renku_data_services/notebooks/apispec.py

@@ -34,10 +34,16 @@ class DefaultCullingThresholds(BaseAPISpec):
     registered: CullingThreshold
 
 
-class ErrorResponseNested(BaseAPISpec):
-    code: int
-    detail: Optional[str] = None
-    message: str
+class Error(BaseAPISpec):
+    code: int = Field(..., example=1404, gt=0)
+    detail: Optional[str] = Field(
+        None, example="A more detailed optional message showing what the problem was"
+    )
+    message: str = Field(..., example="Something went wrong - please try again later")
+
+
+class ErrorResponse(BaseAPISpec):
+    error: Error
 
 
 class Generated(BaseAPISpec):
@@ -293,10 +299,6 @@ class SessionsImagesGetParametersQuery(BaseAPISpec):
     image_url: str
 
 
-class ErrorResponse(BaseAPISpec):
-    error: ErrorResponseNested
-
-
 class LaunchNotebookRequest(BaseAPISpec):
     project_id: str
     launcher_id: str