feat: Add storage hierarchy API and frontend integration

database/sqlite/query.sql

@@ -53,3 +53,16 @@ SELECT * FROM pictures WHERE event_ID = ?;
 -- name: AddPicture :exec
 INSERT INTO pictures (user_ID, storagespace_ID, object_ID, event_ID, check_in_ID, Path, Description, datetime)
 VALUES (?, ?, ?, ?, ?, ?, ?, ?);
+
+-- name: GetAllStorageSpaces :many
+SELECT id, parent, location FROM storagespace;
+
+-- name: GetStorageSpaceByID :one
+SELECT id, parent, location FROM storagespace WHERE id = ?;
+
+-- name: GetChildStorageSpaces :many
+SELECT id, parent, location FROM storagespace WHERE parent = ?;
+
+-- name: GetObjectsByStorageID :many
+SELECT id, storagespace_id, name, description, serialnumber, created 
+FROM objects WHERE storagespace_ID = ?;