fix: address PR review findings for BigQuery persisted alias VIEWs

- Move persisted alias VIEW drops before source table drop to prevent
  DependentViewException on cascade delete
- Add 202 response documentation for alias creation in Apiary
- Fix workspace load docs: only COPY is supported, not CLONE
- Simplify test setup to use parallel-safe bucket initialization

Author: zajca

apiary.apib

@@ -4482,6 +4482,21 @@ An alias cannot be created from tables in an external bucket or from a table in
                 }
             }
 
++ Response 202
+Returned when the alias qualifies for BigQuery VIEW persistence (BigQuery non-linked bucket with BigQuery source table). Alias creation runs asynchronously via a storage job. To see job detail use [Job Detail API endpoint](#reference/jobs/manage-jobs/job-detail)
+    + Body
+
+            {
+                "id": 11,
+                "status": "waiting",
+                "url": "https://connection.keboola.com/v2/storage/jobs/11",
+                "operationName": "aliasCreate",
+                "operationParams": {
+                    "params": {
+                    }
+                }
+            }
+
 
 ## Manage Alias Filters [/v2/storage/tables/{table_id}/alias-filter]